Simatupang, Ray Dinho, and Julia Ivanna. “The Impact of Gadget Nomophobia on Social Life of Adolescents in Medan City”. Journal of Community Service For Indonesian Society 1, no. 2 (May 27, 2023): 49–54. Accessed October 1, 2025. https://journal.berpusi.co.id/index.php/jocsfis/article/view/190.