?url_ver=Z39.88-2004&rft_id=https%3A%2F%2Fdoi.org%2F10.22435%2Fbpk.v49i3.4650&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Wulandari&rft.au=Wulandari%2C+Ratna+Dwi&rft.aufirst=Ratna+Dwi&rft.date=March+2021&rft.pages=155-166&rft.issn=0125+%E2%80%93+9695&rft.volume=49&rft.issue=3&rft.atitle=Faktor-Faktor+yang+Memengaruhi+Kehamilan+Tidak+Diinginkan+di+Indonesia&rft.title=Buletin+Penelitian+Kesehatan&rft.genre=article