Posri, Nuengruethai, and Premwadee Karuhadej. “The Outcome of Self-Efficacy Enhancement Program on Knowledge and Confidence in Physical Health Care of the Elderly for the Family Leaders Who Were Secondary School Students, Bangkok”. Vajira Medical Journal : Journal of Urban Medicine 66, no. 4 (August 30, 2022): 277–286. Accessed May 3, 2024. https://he02.tci-thaijo.org/index.php/VMED/article/view/251959.