APA (7th ed.) Citation

(1989). Early Proterozoic rocks of the Great Lakes Region: Sudbury, Ontario, Canada to Duluth, Minnesota, U.S.A., July 1-7, 1989. American Geophysical Union.

Chicago Style (17th ed.) Citation

Early Proterozoic Rocks of the Great Lakes Region: Sudbury, Ontario, Canada to Duluth, Minnesota, U.S.A., July 1-7, 1989. Washington, D.C: American Geophysical Union, 1989.

MLA (9th ed.) Citation

Early Proterozoic Rocks of the Great Lakes Region: Sudbury, Ontario, Canada to Duluth, Minnesota, U.S.A., July 1-7, 1989. American Geophysical Union, 1989.