APA (7th ed.) Citation

Ojakangas, R. W., & Matsch, C. L. (1982). Minnesota's Geology. University of Minnesota Press.

Chicago Style (17th ed.) Citation

Ojakangas, Richard W., and Charles L. Matsch. Minnesota's Geology. Minneapolis: University of Minnesota Press, 1982.

MLA (8th ed.) Citation

Ojakangas, Richard W., and Charles L. Matsch. Minnesota's Geology. University of Minnesota Press, 1982.