เจ๊ะเต๊ะ มารียัม, and ภู่จินดา วิสาขา. 2018. “Knowledge, understanding Guideline for environmental conservation in school: a case study of students in secondary school of Thamvitya Foundation School Yala”. Al-HIKMAH Journal 3 (5):39-50. https://so01.tci-thaijo.org/index.php/HIKMAH/article/view/119068.