Cita APA (7a ed.)

Howell, C. H. (2016). National Geographic pocket guide to the mammals of North America. National Geographic.

Cita Chicago Style (17a ed.)

Howell, Catherine Herbert. National Geographic Pocket Guide to the Mammals of North America. Washington, D. C.: National Geographic, 2016.

Cita MLA (8a ed.)

Howell, Catherine Herbert. National Geographic Pocket Guide to the Mammals of North America. National Geographic, 2016.

Precaución: Estas citas no son 100% exactas.