APA引文

(1991). Essential Elements Of Obstetric Care Al First Referral Level. WHO.

Chicago Style (17th ed.) Citation

Essential Elements Of Obstetric Care Al First Referral Level. Ginebra: WHO, 1991.

MLA引文

Essential Elements Of Obstetric Care Al First Referral Level. WHO, 1991.

警告：這些引文格式不一定是100％准確.