Hardiyati, H., Iskandar, S. and Hernawaty, T. (2019) “Relationship of Adolescents’ Characteristics, Smartphone Uses and Premarital Sexual Behavior in High School Students”, Jurnal Keperawatan Padjadjaran, 7(1), pp. 1–19. doi: 10.24198/jkp.v7i1.410.