Kusumawati E, Wahyunigsih DD, Setyonugroho I. Effectiveness of Group Guidance Services With Role-Playing Techniques to Reduce Student Aggressive Behavior. JaNoR [Internet]. 2021Jun.7 [cited 2024Apr.19];8(1):44-1. Available from: https://ojs.unpkediri.ac.id/index.php/efektor/article/view/15693