APA (7th ed.) Citation

Smedes, H. W., & Prostka, H. J. (1972). Stratigraphic framework of the Absaroka volcanic supergroup in the Yellowstone National Park region. U.S. G.P.O..

Chicago Style (17th ed.) Citation

Smedes, Harry W., and Harold J. Prostka. Stratigraphic Framework of the Absaroka Volcanic Supergroup in the Yellowstone National Park Region. Washington: U.S. G.P.O., 1972.

MLA (9th ed.) Citation

Smedes, Harry W., and Harold J. Prostka. Stratigraphic Framework of the Absaroka Volcanic Supergroup in the Yellowstone National Park Region. U.S. G.P.O., 1972.