Nisja I, Gemarni Tatalia R, Fitri R. Development of a Digital Book Based on the ARCS Model (Attention, Relevance, Confidence, Satisfaction). IJER [Internet]. 2025 Jun. 29 [cited 2026 Feb. 5];2(2):92-101. Available from: https://journal.risaglobal.org/index.php/ijer/article/view/73