Harjono A, Gunawan G, Adawiyah R, Herayanti L. An Interactive e-Book for Physics to Improve Students’ Conceptual Mastery. Int. J. Emerg. Technol. Learn. [Internet]. 2020 Mar. 13 [cited 2024 Apr. 27];15(05):pp. 40-49. Available from: https://online-journals.org/index.php/i-jet/article/view/10967