Pengembangan E-book Problem Based Learning Materi Ekosistem Terintegrasi Kearifan Lokal Sumur Panguripan Surabaya Untuk Meningkatkan Literasi Digital Peserta Didik. cakrawala-ups [Internet]. 2025 Jun. 17 [cited 2026 Jun. 18];19(1):79-97. Available from: https://cakrawala.upstegal.ac.id/index.php/cakrawala/article/view/477