APA (7th ed.) Citation

Thiel, G. A. (1944). The geology and underground waters of southern Minnesota. The University of Minnesota press.

Chicago Style (17th ed.) Citation

Thiel, George A. The Geology and Underground Waters of Southern Minnesota. Minneapolis: The University of Minnesota press, 1944.

MLA (9th ed.) Citation

Thiel, George A. The Geology and Underground Waters of Southern Minnesota. The University of Minnesota press, 1944.

Warning: These citations may not always be 100% accurate.