APA (7th ed.) Citation

Schwartz, G. M. (1949). The geology of the Duluth metropolitan area. Univ. of Minnesota Press.

Chicago Style (17th ed.) Citation

Schwartz, George Melvin. The Geology of the Duluth Metropolitan Area. Minneapolis: Univ. of Minnesota Press, 1949.

MLA (9th ed.) Citation

Schwartz, George Melvin. The Geology of the Duluth Metropolitan Area. Univ. of Minnesota Press, 1949.

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