APA (7th ed.) Citation

Petersen, R. G., & Wells, J. D. (1961). Preliminary geologic map of the Emmett Wash NW quadrangle, Coconino County, Arizona. The Survey.

Chicago Style (17th ed.) Citation

Petersen, Richard G., and John D. Wells. Preliminary Geologic Map of the Emmett Wash NW Quadrangle, Coconino County, Arizona. Washington, D.C.: The Survey, 1961.

MLA (9th ed.) Citation

Petersen, Richard G., and John D. Wells. Preliminary Geologic Map of the Emmett Wash NW Quadrangle, Coconino County, Arizona. The Survey, 1961.

Warning: These citations may not always be 100% accurate.