Joongjai, A., and W. Techawattanasiridwmrong. “THE RELATIVE FACTORS AFFECTING THE EFFECTIVENESS OF STUDENT AFFAIRS OPERATIONS THE SECONDARY EDUCATIONAL SERVICE AREA OFFICE 3 IN PHRA NAKHON SI AYUTTHAYA”. Journal of MCU Nakhondhat, vol. 7, no. 10, Oct. 2020, pp. 327-39, https://so03.tci-thaijo.org/index.php/JMND/article/view/247538.