(2001). Levels and trends of contraceptive use as assessed in 1998. United Nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLevels and Trends of Contraceptive Use as Assessed in 1998. New York: United Nations, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLevels and Trends of Contraceptive Use as Assessed in 1998. United Nations, 2001.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.