APA (7th ed.) Citation

Kimmel, G. E., & Schiner, G. R. (1970). The Shenango Formation (Mississippian) in northwestern Pennsylvania. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Kimmel, Grant E., and George R. Schiner. The Shenango Formation (Mississippian) in Northwestern Pennsylvania. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1970.

MLA (9th ed.) Citation

Kimmel, Grant E., and George R. Schiner. The Shenango Formation (Mississippian) in Northwestern Pennsylvania. United States Department of the Interior, Geological Survey, 1970.