Westoff, C. F., Potter, R. G., & Sagi, P. C. (1963). The third child: A study in the prediction of fertility. Princeton Univ. Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWestoff, Charles F., Robert G. Potter, और Philip C. Sagi. The Third Child: A Study in the Prediction of Fertility. Princeton, N.J.: Princeton Univ. Press, 1963.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWestoff, Charles F., et al. The Third Child: A Study in the Prediction of Fertility. Princeton Univ. Press, 1963.
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