Kurniawan M, Wastuti SNY. The Role of PIK-Adolescent Peer Counselors in the Efficient Use of Smartphones among Students at SMA Negeri 11 Medan. edumaspul [Internet]. 30Mar.2024 [cited 4Dec.2024];8(1):1369-76. Available from: https://ummaspul.e-journal.id/maspuljr/article/view/7683