APA (7th ed.) Citation

Udden, J. A. (1912). Geology and mineral resources of the Peoria quadrangle, Illinois. Department of the Interior, United States Geological Survey.

Chicago Style (17th ed.) Citation

Udden, Johan August. Geology and Mineral Resources of the Peoria Quadrangle, Illinois. [Washington, D.C.]: Department of the Interior, United States Geological Survey, 1912.

MLA (9th ed.) Citation

Udden, Johan August. Geology and Mineral Resources of the Peoria Quadrangle, Illinois. Department of the Interior, United States Geological Survey, 1912.