APA (7e ed.) Bronvermelding

Zakaria , Z. A. (2001). Obstetric anal sphincter injury: Retrospective review of risk factors.

Chicago (17e ed.) Bronvermelding

Zakaria , Zahar Azuar. Obstetric Anal Sphincter Injury: Retrospective Review of Risk Factors. 2001.

MLA (9e ed.) Bronvermelding

Zakaria , Zahar Azuar. Obstetric Anal Sphincter Injury: Retrospective Review of Risk Factors. 2001.

Let op: Deze citaties zijn niet altijd 100% accuraat.