Sridee, Asst. Prof. Dr. Naddhira. 2019. “An analytical study of moral behavior concerning the fail speech Musāvāda) of Students in Secondary school located in Municipality, NakhonPathom”. Mahachula Academic Journal 6 (ฉบับพิเศษ). Bangkok, Thailand:12-25. https://so04.tci-thaijo.org/index.php/JMA/article/view/180519.