?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Agung+Edi+Rustanto&rft.au=Agung+Edi+Rustanto%2C+Agung+Edi+Rustanto&rft.aulast=Agung+Edi+Rustanto&rft.title=MENGURANGI+KECEMASAN+SISWA+KELAS+XI+DALAM+MENGHADAPI+UJIAN+AKHIR+SEMESTER+MELALUI+METODE+POSITIVE+SELF+TALK+DI+SMKN+1+DEPOK+SLEMAN+YOGYAKARTA&rft.inst=Fakultas+Ilmu+Pendidikan&rft.degree=S1&rft.date=4+October+2012