Phadungros, R. ., and C. Ruangthamsing. “ROLES AND RESPONSIBILITIES OF THE THAI VOLUNTEER DEFENSE CORPS ACCORDING TO CITIZEN PREFERENCE OF KHONKAEN”. Journal of MCU Nakhondhat, vol. 8, no. 10, Oct. 2021, pp. 235-44, https://so03.tci-thaijo.org/index.php/JMND/article/view/256137.