APA (7th ed.) Citation

Geological Survey & Gannett, H. (1899). United States relief map. USGS.

Chicago Style (17th ed.) Citation

Geological Survey and Henry Gannett. United States Relief Map. [Washington, D.C.]: USGS, 1899.

MLA (8th ed.) Citation

Geological Survey and Henry Gannett. United States Relief Map. USGS, 1899.

Warning: These citations may not always be 100% accurate.