?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Safienti+Rizki&rft.au=Ahadiyah%2C+Safienti+Rizki&rft.aulast=Ahadiyah&rft.title=DEVELOPING+COMMUNICATIVE+SPEAKING+TASKS+FOR+THE+ELEVENTH+GRADE+STUDENTS+OF+SMA+MA%E2%80%99ARIF+NU+1+AJIBARANG&rft.inst=Universitas+Negeri+Yogyakarta&rft.date=23+October+2013&rft.degree=S1