Manart, Chompunuth. “Factors Related to Preventive Behaviors towards Coronavirus 2019 among Older Adults in Nonthaburi Province”. Journal of Public Health Nursing 37, no. 2 (October 30, 2023): 32–48. accessed September 10, 2026. https://he01.tci-thaijo.org/index.php/phn/article/view/262435.