Poopan, D. S. (2016) “‘30 Essential Skills for the Qualitative Researcher’ By John W. Creswell”, The Periodical of Behavioral Science, 22(2), pp. 159–168. Available at: https://so06.tci-thaijo.org/index.php/BSRI/article/view/63614 (Accessed: 22 May 2024).