1.
Tamtama GIW, Suryanto P, Suyoto S. Design of English Vocabulary Mobile Apps Using Gamification: An Indonesian Case Study for Kindergarten. Int. J. Eng. Ped. [Internet]. 2020 Jan. 27 [cited 2022 Aug. 15];10(1):pp. 150-162. Available from: https://online-journals.org/index.php/i-jep/article/view/11551