Adamura, F. (2021). Problem-based learning in real number topic for practicing critical and creative thinking. Journal of Physics: Conference Series, 1742(1), 120-138.
Aliyu, M. M. (2017). Problem-based learning on metacognition and writing performance of Nigerian undergraduates [Unpublished doctoral thesis], University Putra Malaysia, Malaysia.
Aliyu, M. M., Fung, Y. M., Abdullah, M. H., & Hoon, T. B. (2016). Developing undergraduates’ awareness of metacognitive knowledge in writing through problem-based learning. International Journal of Applied Linguistics and English Literature, 5(7), 233-240.
Alves, A. C., Sousa, R. M., Fernandes, S., Cardoso, E., Carvalho, M. A., Figueiredo, J., & Pereira, R. M. (2016). Teacher’s experiences in PBL: Implications for practice. European Journal of Engineering Education, 41(2), 123-141.
Andujar, A., Salaberri-Ramiro, M. S., & Cruz Martínez, M. S. (2020). Integrating flipped foreign language learning through mobile devices: Technology acceptance and flipped learning experience. Sustainability, 12(3), 111-130.
Ansarian, L., Adlipour, A. A., Saber, M. A., & Shafiei, E. (2016). The impact of problem-based learning on Iranian EFL learners’ speaking proficiency. Advances in Language and Literary Studies, 7(3), 84-94.
Ansarian, L., & Teoh, M.L. (2018). Problem-based learning: An innovative approach to learn a new language. Springer Nature.
Ary, D., Jacobs, L. C., & Sorensen, Ch. (2010). Introduction to research in Education (8th ed.). Wadsworth Group.
Askarzadeh Torghabeh, R., & Yazdanmehr, E. (2012). EFL learner’s evaluation of writing tasks in Iran’s TOEFL and IELTS preparation courses in light of the process-oriented approach. Iranian Journal of Applied Language Studies, 3(1), 27-50.
Basal, A. (2015). The implementation of a flipped classroom in foreign language teaching. Turkish Online Journal of Distance Education, 16(4), 28-37.
Birjandi, P., & Malmir, A. (2009). The effect of task-based approach on the Iranian advanced EFL learners’ narrative vs. expository writing. The Iranian Journal of Applied Language Studies (IJALS), 1(2), 1–23.
Borjian, M. (2013). English in post-revolutionary Iran: From indigenization to internationalization. Short Run Press.
Butler, L. P., Ronfard, S., & Corriveau, K. H. (Eds.). (2020). The questioning child: Insights from psychology and education. Cambridge University Press.
Deane, P., Odendahl, N., Quinlan, T., Fowles, M., Welsh, C., & Bivens‐Tatum, J. (2008). Cognitive models of writing: Writing proficiency as a complex integrated skill. ETS Research Report Series, 2008(2), 1-36.
Eslami, Z. R. (2010). Teachers’ voice vs. students’ voice: A needs analysis approach to English for acadmic purposes (EAP) in Iran. English Language Teaching, 3(1), 3-11.
Fard, E. E., & Vakili, A. (2018). The effect of problem-based learning on Iranian EFL learners’ vocabulary learning. Journal of Asia TEFL, 15(1), 208-217.
Frear, M. W., & Bitchener, J. (2015). The effects of cognitive task complexity on writing complexity. Journal of Second Language Writing, 30, 45-57.
Graham, S., & Perin, D. (2007). What we know, what we still need to know: Teaching adolescents to write. Scientific Studies of Reading, 11(4), 313-335.
Groves, M., O’rourke, P., & Alexander, H. (2003). The association between student characteristics and the development of clinical reasoning in a graduate-entry, PBL medical programme. Medical Teacher, 25(6), 626-631.
Handoyo, R. F., Rosbiono, M., & Sopandi, W. (2021). Building students’ creative thinking skills using problem-based learning in handling staple food waste. Journal of Educational Sciences, 5(1), 89-103.
Hayashi, S., Tsunekawa, K., Inoue, C., & Fukuzawa, Y. (2013). Comparison of tutored group with tutorless group in problem-based mixed learning sessions: A randomized cross-matched study. BMC Medical Education, 13(1), 158-179.
Hinkin, T. (1995). A review of scale development practices in the study of organizations. Journal of Management, 21(5), 967-988.
Hmelo-Silver, C. E. (2004). Problem-based learning: What and how do students learn?. Educational Psychology Review, 16(3), 235-266.
Hung, W. (2006). The 3C3R model: A conceptual framework for designing problems in PBL. Interdisciplinary Journal of Problem-based Learning, 1(1), 55-77.
Jasti, S. D., & Pavani, A. (2021). Employing problem based learning system in advancing communication skills proficiency in professional communication for engineering undergraduates. Journal of Engineering Education Transformations, 34, 128-134.
Johnson, D. W., & Johnson, R. T. (2009). Energizing learning: The instructional power of conflict. Educational Researcher, 38(1), 37-51.
Jumariati, J., & Sulistyo, G. H. (2017). Problem-based writing instruction: Its effect on students’ skills in argumentative writing. Arab World English Journal (AWEJ), 8, 110-125.
Kalali, N. N., & Pishkar, K. (2015). The effect of genre-based teaching on Iranian EFL learners’ L2 reading comprehension. Journal of Applied Linguistics and Language Research, 2(7), 123-137.
Ketabi, S., Torabi, R. (2015). Teaching academic writing in Iranian EFL classrooms: Teacher-initiated comments or peer-provided feedback?.
Iranian Journal of Research in English Language Teaching. 1(2), 58-65.
Kolber, B. J. (2011). Extended problem-based learning improves scientific communication in senior biology students. Journal of College Science Teaching, 41(1), 32-36.
Koosha, M., & Yakhabi, M. (2012). Problems associated with the use of communicative language teaching in EFL contexts and possible solutions. International Journal of Foreign Language Teaching and Research, 1(2), 63-76.
Kusumoriny, L. A., & Sitepu, S. S. W. (2021). Implementing a problem based learning/PBL method to improve students’ speaking skill in in-flight English class. Proceedings of The 10th National Online Seminar on Linguistics, Language Teaching and Literature, 1(1), 85-100).
Larsson, J. (2001). Problem-based learning: A possible approach to language education.
Lloyd, M. E. (2020). Sometimes a demo is not just a demo: When demonstrating cognitive psychology means confronting assumptions. Scholarship of Teaching and Learning in Psychology, 89-105.
Malmir, A., & Khosravi, F. (2018). The effect of argument mapping instruction on L2 writing achievement across writing tasks and writing components: A case of Iranian EFL learners. Applied Research on English Language, 7(4), 515–540.
Martínez-Fernández, J. R., Corcelles, M., Bañales, G., Castelló, M., & Gutiérrez-Braojos, C. (2016). Exploring conceptions about writing and learning: Undergraduates’ patterns of beliefs and the quality of academic writing. Electronic Journal of Research in Educational Psychology, 14(38), 107-129.
McCarter, S. (2007). IELTS reading tests. New Age International Publication.
Mohammadi, L. (2016). The effect of applying time constraints on IELTS candidates’ writing error types and their attitudes [Unpublished master’s thesis]. Payame Noor University, Iran.
Montafej, J., Lotfi, A., & Chalak, A. (2021). Implementation of hybrid and pure problem-based learning in EFL context: The case of speaking skill and self-confidence of Iranian undergraduate participants. International Journal of Foreign Language Teaching and Research, 9(35), 81-94.
Nassaji, H., & Tian, J. (2010). Collaborative and individual output tasks and their effects on learning English phrasal verbs. Language Teaching Research, 14(4), 397-419.
Ribeiro, L. R. D. C., & Mizukami, M. D. G. (2005). An experiment with PBL in higher education as appraised by the teacher and students. Interface-Comunicação, Saúde, Educação, 9, 357-368.
Savery, J. R. (2006). Overview of problem-based learning: Definitions and distinctions. Interdisciplinary Journal of Problem-based Learning, 1(1), 3-20.
Shimizu, I., Matsuyama, Y., Duvivier, R., & van der Vleuten, C. (2021). Contextual attributes to promote positive social interdependence in problem-based learning: A focus group study. BMC Med Educ, 21 (222), 130-56.
Stevenson, M. (2016). A critical interpretative synthesis: The integration of automated writing evaluation into classroom writing instruction. Computers and Composition, 42, 1-16.
Storch, N. (2005). Collaborative writing: Product, process, and students’ reflections. Journal of Second Language Writing, 14(3), 153-173.
Taghizadeh, M. E., Abidin, M. J. Z., Naseri, E., & Hosseini, M. (2013). In the importance of EFL learners’ writing skill: Is there any relation between writing Skill and content score of English essay test?. International Letters of Social and Humanistic Sciences, 6, 1-12.
Tan, O. S. (2021). Problem-based learning innovation: Using problems to power learning in the 21st century. Gale Cengage Learning.
Teoh, M. L., Ansarian, L., Tik, O. L., & Nair, A. B. (2019). The effects of problem-based language learning on the listening comprehension skills of Malaysian undergraduate students. Journal of Asia TEFL, 16(3), 996.
Vygotsky, L. S. (1987). The collected works of L.S. Vygotsky: Problems of general psychology. Plenum Press.
Zarei, G. R., & Rahimi, A. (2014). Learning transfer in English for general academic purposes writing. SAGE Open, 4(1), 1-12.
Zuhriyah, M. (2017). Problem-based learning to improve students’ grammar competence. Register Journal, 10(1), 48-61.