Rohan; Khatibah; Ikhwan Kurnia Hutasuhut. Perencanaan Program Dakwah Rohis Dalam Mencegah Pergaulan Bebas Di SMA Dharmawangsa Medan: Planning the Rohis Preaching Program to Prevent Free Association at Dharmawangsa High School, Medan. QLB 2026, 7, 65-79.