Wilson, D. E. 1., & Ruff, S. (1999). The Smithsonian book of North American mammals. Washington: Smithsonian Institution Press.
Citación estilo ChicagoWilson, Don Ellis 1944-, y Sue Ruff. The Smithsonian Book of North American Mammals. Washington: Smithsonian Institution Press, 1999.
Cita MLAWilson, Don Ellis 1944-, y Sue Ruff. The Smithsonian Book of North American Mammals. Washington: Smithsonian Institution Press, 1999.
Precaución: Estas citas no son 100% exactas.