PUTRI, Fadira; DARMAYANTI, Nefi. The Effectiveness of Group Counseling with Assertive Training Techniques in Enhancing Self-Esteem among Adolescents Victimized by Bullying. Journal of Educational Sciences, [S. l.], v. 9, n. 5, p. 3718–3730, 2025. DOI: 10.31258/jes.9.5.p.3718-3730. Disponível em: https://jes.ejournal.unri.ac.id/index.php/JES/article/view/1096. Acesso em: 27 apr. 2026.