APA način citiranja (7. izdanje)

Heacox, K. (2016). National Geographic the national parks: An illustrated history. National Geographic.

Čikaški stil citiranja (17. izdanje)

Heacox, Kim. National Geographic the National Parks: An Illustrated History. Washington, D.C: National Geographic, 2016.

MLA način citiranja (9. izdanje)

Heacox, Kim. National Geographic the National Parks: An Illustrated History. National Geographic, 2016.