Hastuti, P., Y. Prahesti, and E. Yunitasari. “The Effect of Reproductive Health Education on Knowledge and Attitudes of Adolescent About Premarital Sex in Private Vocational School Surabaya”. Pediomaternal Nursing Journal, vol. 7, no. 2, Sept. 2021, pp. 101-8, doi:10.20473/pmnj.v7i2.27498.