โอฬาพิริยกุล สุภัค. 2020. “THE DEVELOPMENT OF MULTIMEDIA LEARNING KITS ON NATURAL PHENOMENA FOR PRE-ELEMENTARY STUDENTS AT SRINAKHARINWIROT UNIVERSITY: PRASARNMIT DEMONSTRATION SCHOOL (ELEMENTARY)”. Srinakharinwirot Research and Development Journal of Humanities and Social Sciences 12 (23, January-June). Bangkok, Thailand:98-111. https://so04.tci-thaijo.org/index.php/swurd/article/view/244107.