Boonda, Phongpisanu. 2018. “Analytical Study of Virtual Service Provider Office Management (VSPOM) Factors for Service Plan in the Regional Health Service in Thailand”. Connexion: Journal of Humanities and Social Sciences 7 (2). Chiang Rai, Thailand:148-73. https://so05.tci-thaijo.org/index.php/MFUconnexion/article/view/241204.