HARAHAP, A. I.; ., T.; SITUMORANG, Z. Positive and Negative Impacts of Using Android-Based Smartphone Operations in Early Childhood. The International Journal of Science & Technoledge, [S. l.], v. 6, n. 7, 2018. Disponível em: http://internationaljournalcorner.com/index.php/theijst/article/view/131414. Acesso em: 29 jun. 2024.