Zion National Park, Springdale, Utah :
Zion Canyon shuttle system.

APA Citation

United States. National Park Service. (2000). Zion National Park, Springdale, Utah: Zion Canyon shuttle system. [Washington, DC: U.S. National Park Service.

MLA Citation

United States. National Park Service. Zion National Park, Springdale, Utah: Zion Canyon Shuttle System. [Washington, DC: U.S. National Park Service, 2000.

Warning: These citations may not always be complete (especially for serials).