สังข์ศรี ส. A Model of Educational Services to Enable Graduate Students of Sukhothai Thammathirat Open University to Achieve Learning Success in the Distance Education System. STOU Education Journal, [S. l.], v. 10, n. 2, p. 65–78, 2018. Disponível em: https://so05.tci-thaijo.org/index.php/edjour_stou/article/view/124401. Acesso em: 13 oct. 2026.