Dewantari, T., Surya, B. H. and Bulantika, S. Z. (2021) “Group Counseling with Assertive Training Techniques to Self Confidence Adolescents”, Jurnal Kependidikan: Jurnal Hasil Penelitian dan Kajian Kepustakaan di Bidang Pendidikan, Pengajaran dan Pembelajaran, 7(1), pp. 35–41. doi: 10.33394/jk.v7i1.3317.