APA (7th ed.) Citation

Geological Survey (U.S.), Steven, T. A., Morris, H. T., & Rowley, P. D. (1990). Geologic map of the Richfield 1?x 2?quadrangle, west-central Utah. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Thomas A. Steven, H. T. Morris, and Peter D. Rowley. Geologic Map of the Richfield 1?x 2?quadrangle, West-central Utah. Reston, Va.: The Survey, 1990.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geologic Map of the Richfield 1?x 2?quadrangle, West-central Utah. The Survey, 1990.