SITANGGANG, Y. A.; HALIMAH, N. A Anxiety Level of Teenagers Using Smartphones at SMK Negeri 1 Martapura. Journal of Nursing Invention, [S. l.], v. 4, n. 2, p. 134–138, 2023. DOI: 10.33859/jni.v4i2.448. Disponível em: https://ejurnal.unism.ac.id/index.php/JNI/article/view/448. Acesso em: 22 apr. 2024.