APA (7th ed.) Citation

Hansen, W. R., Carrara, P. E., Rowley, P. D., & Geological Survey. (1980). Geologic map of the Haystack Rock quadrangle, Moffat County, Colorado. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Hansen, Wallace R., Paul E. Carrara, Peter D. Rowley, and Geological Survey. Geologic Map of the Haystack Rock Quadrangle, Moffat County, Colorado. Reston, Va.: U.S. Geological Survey, 1980.

MLA (8th ed.) Citation

Hansen, Wallace R., et al. Geologic Map of the Haystack Rock Quadrangle, Moffat County, Colorado. U.S. Geological Survey, 1980.