APA-viite (7. p.)

Thompson, J. M., & Schermeister, P. (2006). Our national parks: Tours with rangers. National Geographic.

Chicago-viite (17. p.)

Thompson, John M., ja Phil Schermeister. Our National Parks: Tours with Rangers. Washington, D.C: National Geographic, 2006.

MLA-viite (9. p.)

Thompson, John M., ja Phil Schermeister. Our National Parks: Tours with Rangers. National Geographic, 2006.