Sombutboon, Jittiya, and Nutchanat Prakas. “The Effect of a Sleep Quality Promotion Program for the Elderly Patients in the Hospital”. Journal of Phrapokklao Nursing College, Chanthaburi 33, no. 1 (June 15, 2022): 239–250. Accessed April 27, 2024. https://he01.tci-thaijo.org/index.php/pnc/article/view/256269.