Khantichitr, P., W. Promwong, C. Keawmanee, and A. Charoenukul. “Health Belief Model in the Prevention of Corona Virus Disease 2019 (COVID-19) Among People in Ubon Ratchathani Province”. Journal of Health Science Boromarajonani College of Nursing Sunpasitthiprasong, Vol. 5, no. 2, Aug. 2021, pp. 39-53, https://he01.tci-thaijo.org/index.php/bcnsp/article/view/249514.