?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Haning&rft.aulast=Tri+Widiastuti&rft.au=Tri+Widiastuti%2C+Haning&rft.atitle=Perilaku+Bullying+Terhadap+Kepercayaan+Diri+Siswa&rft.title=Ghaidan%3A+Jurnal+Bimbingan+Konseling+Islam+dan+Kemasyarakatan&rft.genre=article