Kitjaroonchai, Nakhon. “The Correlation between Students’ Academic Achievement and Ethical and Moral Activities Involvement in a Christian Institution”. Human Behavior, Development and Society 12, no. 2 (March 12, 2019): 24–33. accessed September 21, 2026. https://so01.tci-thaijo.org/index.php/hbds/article/view/177195.