APA (7th ed.) Citation

Geological Survey (U.S.). (1996). Colorado: Index to topographic and other map coverage. The Survey ; Map Distribution.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Colorado: Index to Topographic and Other Map Coverage. Reston, Va. : Denver, Colo.: The Survey ; Map Distribution, 1996.

MLA (9th ed.) Citation

Geological Survey (U.S.). Colorado: Index to Topographic and Other Map Coverage. The Survey ; Map Distribution, 1996.