Nurmasyitah N, Lubis NA, Derlina D. Design a Problem-Based Basic Physics E-Module Using Flip PDF Corporate Edition . jppipa, pendidikan ipa, fisika, biologi, kimia [Internet]. 2022 Oct. 31 [cited 2024 Apr. 20];8(4):2117-23. Available from: https://jppipa.unram.ac.id/index.php/jppipa/article/view/1984