Fitriani, Husnah R. UPAYA PENINGKATAN PENGETAHUAN REMAJA MENGENAI PERILAKU SEKS BEBAS DI SMAN 25 BATAM. abjcd [Internet]. 2021 Sep. 23 [cited 2025 May 10];3(2). Available from: https://journal.univawalbros.ac.id/index.php/abjcd/article/view/fitiriani20211