Firda, Firda, Ghullam Hamdu, and Akhmad Nugraha. “Pengembangan E-Modul Topik Penjernihan Air Berbasis Education for Sustainable Development (ESD) Di Sekolah Dasar”. Naturalistic: Jurnal Kajian dan Penelitian Pendidikan dan Pembelajaran 7, no. 2 (April 30, 2023): 1579–1585. Accessed September 9, 2024. https://journal.umtas.ac.id/index.php/naturalistic/article/view/3114.