Khowsroy, K., P. Wongsangnoi, and C. Kongsuk. “Happiness and Self-Care Behaviors of Older Adults based on the Sufficiency Economy Philosophy: Khao Wong Kot Community, Chanthaburi Province”. Journal of The Royal Thai Army Nurses, vol. 27, no. 1, Apr. 2026, pp. 52-60, https://he01.tci-thaijo.org/index.php/JRTAN/article/view/277647.