F. F. I. Said, F. Makualaina, L. N. B. Sembiring, N. Nasrianti, Y. R. Rainuny, and Y. N. Joni, “The Relationship between Knowledge about HIV/AIDS and Adolescents’ Free Sexual Behavior”, IJGHR, vol. 8, no. 2, pp. 553–558, Mar. 2026.