Port, D., Ralston, J., & Ralston, B. M. (2008). Caveman's guide to baby's first year: Early fatherhood for the modern hunter-gatherer. Sterling.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPort, David, John Ralston, और Brian M. Ralston. Caveman's Guide to Baby's First Year: Early Fatherhood for the Modern Hunter-gatherer. New York: Sterling, 2008.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPort, David, et al. Caveman's Guide to Baby's First Year: Early Fatherhood for the Modern Hunter-gatherer. Sterling, 2008.
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