APA (7th ed.) Citation

Donnell, J. R., Yeend, W. E., & Smith, M. C. (1985). Preliminary geologic map of the Collbran quadrangle, Mesa County, Colorado. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Donnell, John R., Warren E. Yeend, and Marjorie C. Smith. Preliminary Geologic Map of the Collbran Quadrangle, Mesa County, Colorado. Reston, Va.: U.S. Geological Survey, 1985.

MLA (9th ed.) Citation

Donnell, John R., et al. Preliminary Geologic Map of the Collbran Quadrangle, Mesa County, Colorado. U.S. Geological Survey, 1985.