APA (7th ed.) Citation

Trails Illustrated (Firm), Geological Survey (U.S.), Zion Natural History Association, & Williams and Heintz Map Corporation. (1995). Zion National Park, Utah (Rev. 1995.). Trails Illustrated.

Chicago Style (17th ed.) Citation

Trails Illustrated (Firm), Geological Survey (U.S.), Zion Natural History Association, and Williams and Heintz Map Corporation. Zion National Park, Utah. Rev. 1995. Evergreen, Colo.: Trails Illustrated, 1995.

MLA (9th ed.) Citation

Trails Illustrated (Firm), et al. Zion National Park, Utah. Rev. 1995. Trails Illustrated, 1995.