APA (7th ed.) Citation

Sohl, N. F., & Wright, W. B. (1979). Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1978. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Sohl, Norman F., and W. B. Wright. Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1978. Washington: U.S. Govt. Print. Off, 1979.

MLA (9th ed.) Citation

Sohl, Norman F., and W. B. Wright. Changes in Stratigraphic Nomenclature by the U.S. Geological Survey, 1978. U.S. Govt. Print. Off, 1979.