Ruchakom, P., and B. Satayavongthip. “Potential Development Among Hypertensive Elderly for Self-Care With Four Principles in Dan Kwian Sub-District, Chokchai District, Nakhon Ratchasima Province”. Journal of Medicine and Public Health, Ubon Ratchathani University, vol. 5, no. 2, Aug. 2022, pp. 84-93, https://he01.tci-thaijo.org/index.php/jmpubu/article/view/253219.