Chuaktong, S., Somprasert, C., & Kittiteerasack, P. (2023). The Effects of a Positive-Emotion-Enhancing Program on the Happiness of the Elderly. Journal of The Royal Thai Army Nurses, 24(3), 123–132. Retrieved from https://he01.tci-thaijo.org/index.php/JRTAN/article/view/259541