Allania Hanung Putri Sekar Ningrum et al. 2024. Knowledge and Self-Efficacy of Adolescents in the Prevention of Premarital Sexual Activity. Jurnal Mahasiswa Ilmu Kesehatan. 3, 1 (Dec. 2024), 20–29. DOI:https://doi.org/10.59841/jumkes.v3i1.2019.