MUHTAROM; SARTIKA, Indah Dwi. Development Of Socialisation Materials On The Negative Impact Of Smartphones On Early Childhood: Guidance For Teachers Who Are Members Of IGRA. Raudhatul Athfal: Jurnal Pendidikan Islam Anak Usia Dini, [S. l.], v. 9, n. 2, p. 107–121, 2025. DOI: 10.19109/ra.v9i2.30665. Disponível em: https://jurnal.radenfatah.ac.id/index.php/raudhatulathfal/article/view/30665.. Acesso em: 23 jan. 2026.