Maulinsari, Putri Gusti, and Diana Septi Purnama. “Assertive Behavior Development for Drug Abuse Prevention through Group Guidance Services”. AL-ISHLAH: Jurnal Pendidikan, vol. 14, no. 3, July 2022, pp. 3537-44, doi:10.35445/alishlah.v14i3.1737.