Isharyadi R, Annajmi A. Pengembangan Video Ajar Kalkulus Integral Berbasis Pen Tablet Di Universitas Pasir Pengaraian. JA [Internet]. 2022 Apr. 30 [cited 2025 Dec. 17];4(2). Available from: https://ojs-staging.upp.ac.id/index.php/absis/article/view/1358