APA (7th ed.) Citation

Steven, T. A., & Lipman, P. W. (1973). Geologic map of the Spar City quadrangle, Mineral County, Colorado. The Survey.

Chicago Style (17th ed.) Citation

Steven, Thomas A., and Peter W. Lipman. Geologic Map of the Spar City Quadrangle, Mineral County, Colorado. Washington, D.C.: The Survey, 1973.

MLA (9th ed.) Citation

Steven, Thomas A., and Peter W. Lipman. Geologic Map of the Spar City Quadrangle, Mineral County, Colorado. The Survey, 1973.