APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.