Sirisyos Kijmongkolvanich, Siriphong Sirisawat, and Songwut Egwutvongsa. “Creative Thinking: The Development of Lifelong Learning With the Principle of Andragogy for The Elderly Group in Northern Thailand”. Educational Administration: Theory and Practice 30, no. 4 (April 16, 2024): 2403–2413. Accessed May 16, 2024. http://kuey.net/index.php/kuey/article/view/1162.