Putri, Gema, Fitrah Ayu, and Ahmad Fauzi. “Validitas E-Book Fisika Terintegrasi Materi Bencana Petir Berbasis Model Discovery Learning”. JURNAL EKSAKTA PENDIDIKAN (JEP) 4, no. 2 (November 29, 2020): 163-170. Accessed July 3, 2024. https://jep.ppj.unp.ac.id/index.php/jep/article/view/524.