APA (7th ed.) Citation

Ryder, R. T., & Crangle, R. D., Jr. (2002). Stratigraphic framework of Cambrian and Ordovician rocks in the central Appalachian Basin from Lake County, Ohio, to Juniata County, Pennsylvania (Online verson 1.0.). U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Ryder, Robert T., and Robert D. Crangle, Jr. Stratigraphic Framework of Cambrian and Ordovician Rocks in the Central Appalachian Basin from Lake County, Ohio, to Juniata County, Pennsylvania. Online verson 1.0. Reston, VA: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.

MLA (9th ed.) Citation

Ryder, Robert T., and Robert D. Crangle, Jr. Stratigraphic Framework of Cambrian and Ordovician Rocks in the Central Appalachian Basin from Lake County, Ohio, to Juniata County, Pennsylvania. Online verson 1.0. U.S. Dept. of the Interior, U.S. Geological Survey, 2002.