Cita APA

(1982). North American tortoises: Conservation and ecology. Washington, D.C.: Fish and Wildlife Service.

Citación estilo Chicago

North American Tortoises: Conservation and Ecology. Washington, D.C.: Fish and Wildlife Service, 1982.

Cita MLA

North American Tortoises: Conservation and Ecology. Washington, D.C.: Fish and Wildlife Service, 1982.

Precaución: Estas citas no son 100% exactas.