Kumsri, Sirinun, Yada reamrimmadun, Kathawoot Deepreecha, and Chutikarn Thaworncharoen. “Motivational factors related to receiving vaccination booster shots of the Coronavirus (COVID-19) among the elderly in Bang Khla District, Chachoengsao Province”. Journal of Medicine and Health Sciences 30, no. 1 (April 28, 2023): 142–149. accessed October 9, 2026. https://he01.tci-thaijo.org/index.php/jmhs/article/view/263328.