LAYANAN KONSELING KELOMPOK REBT TEKNIK SELF-TALK MENINGKATKAN SELF EFFICACY   SISWA. JSSR [Internet]. 2026 Aug. 31 [cited 2026 Sep. 4];9(4):6646 – 6651. Available from: https://jurnal.goretanpena.com/index.php/JSSR/article/view/6222