Ruckbumrung T, Lalognum N, Iamboonyarit P, Puripanik C. An Evaluation of the Doctor of Philosophy Program in Educational Technology, Revised A.D. 2016. HRD. J. [internet]. 2023 Jan. 11 [cited 2026 Sep. 11];13(2):8-20. available from: https://so01.tci-thaijo.org/index.php/HRDJ/article/view/263074