Dani Novita Pratiwi, Wahyu Budianto , Gunawan Wang, Emil Robert Kaburuan. The Application of Gamification in Online Learning: Case Studying Mobile Apps. IJCA [Internet]. 2020Jun.1 [cited 2024Apr.26];13(02):1210 -1214. Available from: http://sersc.org/journals/index.php/IJCA/article/view/26921