Kasim, Ditya Pranata, Hartono Mamu, Djuna Lamondo, Mustamin Ibrahim, and Nur Mustaqimah. “Analisis Validitas E-Modul Berbasis Problem Based Learning Pada Materi Sistem Reproduksi Manusia”. Biocaster : Jurnal Kajian Biologi 6, no. 4 (October 1, 2026): 1872–1883. Accessed October 11, 2026. https://e-journal.lp3kamandanu.com/index.php/biocaster/article/view/1481.