World Health Organization. (2009). Monitoring emergency obstetric care: A handbook. World Health Organization.
芝加哥风格引文World Health Organization. Monitoring Emergency Obstetric Care: A Handbook. [Geneva]: World Health Organization, 2009.
MLA引文World Health Organization. Monitoring Emergency Obstetric Care: A Handbook. World Health Organization, 2009.
警告：这些引文格式不一定是100％准确.