Barokati Seliro Wangi, Nisaul, Paisal Halim, Syamsiah Badruddin, Taufan Maulamin, Muhammad Ikhsan Setiawan, Muh Barid Nizarudin Wajdi, Agung Kesna Mahatmaharti, Dwi Fita Heriyawati, and Janner Simarmata. 2018. “Gamification Framework and Achievement Motivation in Digital Era : Concept and Effectiveness”. International Journal of Engineering & Technology 7 (3.6): 429-31. https://doi.org/10.14419/ijet.v7i3.6.17487.