World Health Organization. (1998). Health workers manual on family planning options (Second.). World Health Organization.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Health Workers Manual on Family Planning Options. Second. Geneva: World Health Organization, 1998.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWorld Health Organization. Health Workers Manual on Family Planning Options. Second. World Health Organization, 1998.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.