APA (7 वां संस्करण) प्रशस्ति पत्र

World Health Organization, Abou Zahr, C., & Royston, E. (1991). Maternal mortality: A global factbook. World Health Organization.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

World Health Organization, Carla Abou Zahr, और Erica Royston. Maternal Mortality: A Global Factbook. Geneva: World Health Organization, 1991.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

World Health Organization, et al. Maternal Mortality: A Global Factbook. World Health Organization, 1991.