“Effect Self Help Group On Coping Mechanism Focused Problem Coping In Adolescents SMK Negeri Kediri”. Jurnal Penelitian Sekolah Tinggi Ilmu Kesehatan Nahdlatul Ulama Tuban, vol. 2, no. 2, Jan. 2021, https://doi.org/10.47710/jp.v2i2.62.