SITUMORANG, Efi Yanita; CONNIE, Connie; KRISTIAWAN, Muhammad. Smartphone and Learning: Time Management as a Key Mediator of Negative Effects in High School Students. Journal of Social Work and Science Education, [S. l.], v. 7, n. 2, p. 1351–1365, 2026. DOI: 10.52690/jswse.v7i2.1458. Disponível em: https://www.ejournal.sembilanpemuda.id/index.php/jswse/article/view/1458. Acesso em: 23 apr. 2026.