Nathasilo, P. T. . “SAPPURISTHAM AND SELF-MANAGEMENT IN THE AGE OF CORONA VIRUS DISEASE (COVID-19)”. Journal of MCU Nakhondhat, vol. 8, no. 6, May 2021, pp. 123-35, https://so03.tci-thaijo.org/index.php/JMND/article/view/252701.