Wongskule, Uraiwan. “Development of A Non-Formal Education Program Based on Self-Directed Learning and Participatory Learning Approaches to Enhance Reading Habits of Distance Learning of Non-Formal Education Students”. Scholar: Human Sciences 3, no. 1 (October 16, 2014). Accessed May 3, 2024. http://www.assumptionjournal.au.edu/index.php/Scholar/article/view/259.