DISCOVERY LEARNING MODEL EBOOK DEVELOPMENT ON ECOSYSTEM MATERIALS FOR DISTANCE LEARNING. EDUSAINS, [S. l.], v. 13, n. 2, p. 119–128, 2021. DOI: 10.15408/es.v13i2.21876. Disponível em: https://journal.uinjkt.ac.id/edusains/article/view/21876. Acesso em: 22 nov. 2025.