Boyd, R., & Silk, J. B. (2006). How humans evolved (4th ed.). W. W. Norton & Co..
Citación estilo ChicagoBoyd, Robert, and Joan B. Silk. How Humans Evolved. 4th ed. New York: W. W. Norton & Co., 2006.
Cita MLABoyd, Robert, and Joan B. Silk. How Humans Evolved. 4th ed. W. W. Norton & Co., 2006.
Warning: These citations may not always be 100% accurate.