APA (7. basım) Alıntı

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

Chicago Style (17. basım) Atıf

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

MLA (9th ed.) Atıf

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