Wanna, S., J. Kiatsinsub, and K. Inpinit. “Perspective of the competent authorities towards law enforcement on communicable disease act. B.E. 2558: A case study of COVID - 19 in Phetchabun Province”. Journal of Public Health and Health Sciences Research, vol. 2, no. 3, Dec. 2020, pp. 54-68, https://he01.tci-thaijo.org/index.php/JPHSR/article/view/244656.