Thipsungwan, Kamolthip, Nithipong Sribenchamas, and Prachuab Lamluk. “Effects of the Development Competency Program of Volunteer for Taking Care of the Elderly in Community”. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University 12, no. 1 (September 15, 2017): 275–291. Accessed April 27, 2024. https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/88169.