Mahrawi M, Istikomah U, Ratnasari D. Development of E-Book Learning Media Based on Problem Solving in the Material of the Human Digestive System. SEAJ [Internet]. 2021 Sep. 28 [cited 2024 Apr. 28];3(2):75-88. Available from: http://jurnalpendidikan.unisla.ac.id/index.php/SEAJ/article/view/433