(Saengthong), P. S. S., Sudhikhambhirayan, P., Thongpan, S., Saengsai, P., & Buarabha, H. (2018). An Approach for Promoting the Students’ Graduation in Doctor of Philosophy Program of Mahachulalongkornrajavidyalaya University. Dhammathas Academic Journal, 18(3), 113–126. retrieved from https://so06.tci-thaijo.org/index.php/dhammathas/article/view/105222