Janjuy, Chamaipron, Waree Kangchai, and Pornchai Jullmate. 2024. “Effect of the Perceived Health Belief Promoting Program on Preventive Behaviors Coronavirus Disease 2019 (Covid-19) in Community-Dwelling Older Adults”. Journal of health and health management 10 (2). Bangkok, Thailand:196-207. https://he01.tci-thaijo.org/index.php/slc/article/view/273819.