Choiwongngam, Phiphop, Tawan Vigripat, and Chulaporn Kobjaiklang. 2019. “Causitive Factors Influential to Operational Effectiveness in Information Technology for Private University Lecturers in Bangkok Metropolitan Region”. Rajapark Journal 13 (31). Bangkok, Thailand:27-41. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/161266.