Cita APA
Ojakangas, R. W., & Matsch, C. L. (1982). Minnesota's geology. University of Minnesota Press.
Citación estilo Chicago
Ojakangas, Richard W., and Charles L. Matsch. Minnesota's Geology. Minneapolis: University of Minnesota Press, 1982.
Cita MLA
Ojakangas, Richard W., and Charles L. Matsch. Minnesota's Geology. University of Minnesota Press, 1982.
Warning: These citations may not always be 100% accurate.