ไชยะพันธ์ อ., บุญไชย พ., and โพธิบัติ พ. “Youth training centers: The development of a curriculum and training in morality and ethics, Nakhon Ratchasima Province”. Ratchaphruek Journal, vol. 16, no. 2, June 2018, pp. 18-29, https://so05.tci-thaijo.org/index.php/Ratchaphruekjournal/article/view/128009.