Siribhaddo (Tabsang), Phramaha Ratthapol, Chaval Siriwat, and Sompong Suwanphuma. 2021. “The Development of Morality Based on the Four Noble Truths in Buddhism Subject of the Elementary School Students, Pakkred District, Nonthaburi Province”. Journal of MCU Humanities Review 7 (2). ิิิBankok, Thailand:227-39. https://so03.tci-thaijo.org/index.php/human/article/view/255258.