?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=41120035%2C+BILLI+GAVRILA&rft.aufirst=BILLI+GAVRILA&rft.aulast=41120035&rft.degree=Bachelor&rft.inst=Universitas+Kristen+Duta+Wacana&rft.title=PENGARUH+PENGGUNAAN+KB+SUNTIK+3+BULANAN+TERHADAP+KEJADIAN+GANGGUAN+MENSTRUASI+DI+BIDAN+PRAKTIK+SWASTA+%E2%80%9CRATIH%E2%80%9D+KECAMATAN+DANUKUSUMAN+YOGYAKARTA&rft.tpages=68&rft.date=February+2017