APA (7th ed.) Citation

Prostka, H. J., Ruppel, E. T., & Christiansen, R. L. (1975). Geologic map of the Abiathar Peak quadrangle, Yellowstone National Park, Wyoming and Montana. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Prostka, Harold J., Edward Thompson Ruppel, and Robert L. Christiansen. Geologic Map of the Abiathar Peak Quadrangle, Yellowstone National Park, Wyoming and Montana. Reston, Va.: U.S. Geological Survey, 1975.

MLA (9th ed.) Citation

Prostka, Harold J., et al. Geologic Map of the Abiathar Peak Quadrangle, Yellowstone National Park, Wyoming and Montana. U.S. Geological Survey, 1975.