Westoff, L. A., & Westoff, C. F. (1971). From now to zero: Fertility, contraception and abortion in America. Little, Brown.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWestoff, Leslie Aldridge, और Charles F. Westoff. From Now to Zero: Fertility, Contraception and Abortion in America. Boston: Little, Brown, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWestoff, Leslie Aldridge, और Charles F. Westoff. From Now to Zero: Fertility, Contraception and Abortion in America. Little, Brown, 1971.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.