เหลาสาร ช., ไชยสัตย์ ก. and วิทยาขาว ว. 2020. 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. 29, 5 (Oct. 2020), 813–821.