Hidayatulloh, I., Pambudi, S., Surjono, H. D., & Sukardiyono, T. (2021). Gamification on Chatbot-Based Learning Media: a Review and Challenges. Elinvo (Electronics, Informatics, and Vocational Education), 6(1), 71–80. https://doi.org/10.21831/elinvo.v6i1.43705