Muttaqin, Ainul, Achmad Noor Fatirul, and Hartono Hartono. “Pengembangan Modul Perubahan Lingkungan Dan Daur Ulang Limbah Berbasis Discovery Learning Melalui Media Google Classroom”. Jurnal Pijar Mipa 14, no. 2 (July 22, 2019): 60–67. Accessed January 27, 2023. https://jurnalfkip.unram.ac.id/index.php/JPM/article/view/1292.