Tyagita Widya Sari, and Putri Octia Hairani , translators. “Differences in Knowledge Before and After Counseling on Sex Education to Students at SMA Negeri 1 Kampar Timur Riau Province”. Jurnal Indah Sains Dan Klinis, vol. 2, no. 2, Aug. 2021, pp. 18-21, https://doi.org/10.52622/jisk.v2i2.20.