APA (7th ed.) Citation

Geological Survey (U.S.), Donnell, J. R., Yeend, W. E., & Smith, M. C. (1989). Geologic map of the North Mamm Peak quadrangle, Garfield County, Colorado. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), John R. Donnell, Warren E. Yeend, and Marjorie C. Smith. Geologic Map of the North Mamm Peak Quadrangle, Garfield County, Colorado. Reston, Va.: The Survey, 1989.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of the North Mamm Peak Quadrangle, Garfield County, Colorado. The Survey, 1989.