Promyen, Nittaya, Ansuree Sirisophon, and Payao Nimitpornchai. “The Perceived Self-Efficacy Among Elderly People With a Chronic Disease”. NU Journal of Nursing and Health Sciences 14, no. 2 (August 18, 2020): 126–137. Accessed March 29, 2024. https://he01.tci-thaijo.org/index.php/NurseNu/article/view/243349.