APA (7th ed.) Citation

Johnson, J., & Burton, J. A. (2008). Animal tracks & signs. National Geographic Society.

Chicago Style (17th ed.) Citation

Johnson, Jinny, and John A. Burton. Animal Tracks & Signs. Washington, D.. C: National Geographic Society, 2008.

MLA (9th ed.) Citation

Johnson, Jinny, and John A. Burton. Animal Tracks & Signs. National Geographic Society, 2008.