APA (7th ed.) Citation

Geological Survey (U.S.), Newhall, C. G., Ulrich, G. E., & Wolfe, E. W. (1987). Geologic map of the southwest part of the San Francisco volcanic field, north-central Arizona. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Christopher G. Newhall, George E. Ulrich, and Edward W. Wolfe. Geologic Map of the Southwest Part of the San Francisco Volcanic Field, North-central Arizona. Reston, Va.: The Survey, 1987.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of the Southwest Part of the San Francisco Volcanic Field, North-central Arizona. The Survey, 1987.