Dewa Made Dwicky Putra Nugraha. E-Modul IPA Berbasis Pendekatan Saintifik Pada Materi Cahaya & Alat Optik Kelas IV SD. WA [Internet]. 2022Apr.29 [cited 2024Nov.15];13(1):62-3. Available from: http://43.243.142.146/index.php/widyaaccarya/article/view/1237