Ayu, I. P. and Marwiyah, N. (2019) “The Relationship Between Assertive Attitude and Self-Concept with Premarital Sexual Behavior in Adolescents at SMP Negeri 17 Kota Serang”, Faletehan Health Journal, 6(2), pp. 56–63. doi: 10.33746/fhj.v6i2.31.