Muhamad Nurdin Matondang, Sri, Hanum. Developing a Web-Based Learning (E-Learning) in General Biology Subjects with Joomla Program. Biosfer [Internet]. 2018 Jan. 23 [cited 2024 Nov. 23];7(1):1-9. Available from: https://journal.unj.ac.id/unj/index.php/biosfer/article/view/5617