Muhamad Sartibi, Nadiroh, Asep Supena. “Environmental Education in Schools: Grounded Theory Research in Adiwiyata Elementary School”. International Journal of Advanced Science and Technology 29, no. 06 (April 26, 2020): 1348 - 1365. Accessed April 30, 2024. http://sersc.org/journals/index.php/IJAST/article/view/11812.