APA (7th ed.) Citation

Carrara, P. E. (1980). Surficial geologic map of the Vernal 1 x 2 quadrangle, Colorado and Utah. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Carrara, Paul E. Surficial Geologic Map of the Vernal 1 X 2 Quadrangle, Colorado and Utah. Reston, Va.: U.S. Geological Survey, 1980.

MLA (9th ed.) Citation

Carrara, Paul E. Surficial Geologic Map of the Vernal 1 X 2 Quadrangle, Colorado and Utah. U.S. Geological Survey, 1980.