Zakaria , Z. A. (2001). Obstetric anal sphincter injury: Retrospective review of risk factors.
芝加哥风格引文Zakaria , Zahar Azuar. Obstetric Anal Sphincter Injury: Retrospective Review of Risk Factors. 2001.
MLA引文Zakaria , Zahar Azuar. Obstetric Anal Sphincter Injury: Retrospective Review of Risk Factors. 2001.
警告：这些引文格式不一定是100％准确.