Sa-nguansat, K. “The Development Model to Improve ICT Skills for Child Development Center Staff by Implementing Self-Directed Strategies”. Journal of Graduate School, Pitchayatat, Ubon Ratchathani Rajabhat University, vol. 13, no. 2, Dec. 2018, pp. 281-7, https://so02.tci-thaijo.org/index.php/Pitchayatat/article/view/221675.