APA (7th ed.) Citation

Geological Survey (U.S.). (1954). Topographic map of the Black Canyon of the Gunnison National Monument, Colorado (Ed. of 1950.). U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Topographic Map of the Black Canyon of the Gunnison National Monument, Colorado. Ed. of 1950. Washington: U.S. Geological Survey, 1954.

MLA (9th ed.) Citation

Geological Survey (U.S.). Topographic Map of the Black Canyon of the Gunnison National Monument, Colorado. Ed. of 1950. U.S. Geological Survey, 1954.