Cita APA (7a ed.)

Peterson, R. T., & Fisher, J. Wild america: The record of a 30,000 mile journey around the north american continent by an american naturalist and his british colleague.

Cita Chicago Style (17a ed.)

Peterson, Roger Tory, y James Fisher. Wild America: The Record of a 30,000 Mile Journey Around the North American Continent by an American Naturalist and His British Colleague.

Cita MLA (8a ed.)

Peterson, Roger Tory, y James Fisher. Wild America: The Record of a 30,000 Mile Journey Around the North American Continent by an American Naturalist and His British Colleague.