Coons, J. E., Brennan, P. M., & Witte, J. (1999). By nature equal: The anatomy of a Western insight. Princeton University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCoons, John E., Patrick M. Brennan, और John Witte. By Nature Equal: The Anatomy of a Western Insight. Princeton, N.J.: Princeton University Press, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCoons, John E., et al. By Nature Equal: The Anatomy of a Western Insight. Princeton University Press, 1999.
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