APA (7th ed.) Citation

Wright, G. F. (1890). The glacial boundary in western Pennsylvania, Ohio, Kentucky, Indiana, and Illinois. Department of the Interior, United States Geological Survey.

Chicago Style (17th ed.) Citation

Wright, G. Frederick. The Glacial Boundary in Western Pennsylvania, Ohio, Kentucky, Indiana, and Illinois. Washington, D.C.: Department of the Interior, United States Geological Survey, 1890.

MLA (9th ed.) Citation

Wright, G. Frederick. The Glacial Boundary in Western Pennsylvania, Ohio, Kentucky, Indiana, and Illinois. Department of the Interior, United States Geological Survey, 1890.