Phansamdang, K., Y. Waythongkhum, and S. Areehathairat. “The Development of Teachers’ Connecting Skills with Self-Directed Learning Through a Learning Package on the Internet”. Ph.D. in Social Sciences Journal, vol. 13, no. 1, Apr. 2023, pp. 142-54, https://so05.tci-thaijo.org/index.php/phdssj/article/view/254662.