APA (7th ed.) Citation

Kellogg, K. S. (2017). Geologic map of the Upper Arkansas River Valley Region, North-Central Colorado. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Kellogg, Karl S. Geologic Map of the Upper Arkansas River Valley Region, North-Central Colorado. [Reston, Virginia]: U.S. Geological Survey, 2017.

MLA (9th ed.) Citation

Kellogg, Karl S. Geologic Map of the Upper Arkansas River Valley Region, North-Central Colorado. U.S. Geological Survey, 2017.