APA (7th ed.) Citation

Gonzales, D. A., Potter, K. E., Turner, B. E., & Colorado Geological Survey. (2008). Geologic map of the Bayfield quadrangle, La Plata County, Colorado. Colorado Geological Survey.

Chicago Style (17th ed.) Citation

Gonzales, David A., Katherine E. Potter, B. E. 1936- Turner, and Colorado Geological Survey. Geologic Map of the Bayfield Quadrangle, La Plata County, Colorado. Denver, Colo.: Colorado Geological Survey, 2008.

MLA (8th ed.) Citation

Gonzales, David A., et al. Geologic Map of the Bayfield Quadrangle, La Plata County, Colorado. Colorado Geological Survey, 2008.