Choopun, Jittima, and Jirayu Tuppoom. 2019. “Tertiary English Language Teachers’ Perceptions Toward Self-Reflection and Teacher Collaboration on Learning and Professional Development”. Journal of Liberal Arts Prince of Songkla University 11 (2):1-43. https://so03.tci-thaijo.org/index.php/journal-la/article/view/232644.