Indyani W, Kurniah N. Development of Multimedia Based Busy Book Learning Media to Improve Cognitive and Language Abilities in Early Childhood. IJOEM Indones. J. E-learning Multimed. [Internet]. 2024 Oct. 16 [cited 2025 Jul. 19];3(3):100-9. Available from: https://ejournal.1001tutorial.com/index.php/ijoem/article/view/291