เหลาสาร ช., ไชยสัตย์ ก., and วิทยาขาว ว. “Caring for the Dependent Elderly at the Center for Elderly Care at Waeng Sub-District Health Promotion Hospital, Kradian Subdristric, Trakan Phuet Phon District, Ubon Ratchathani Province”. Journal of Health Science of Thailand, vol. 29, no. 5, Oct. 2020, pp. 813-21, https://thaidj.org/index.php/JHS/article/view/9472.