APA (7th ed.) Citation

Wahl, T. E., Kuhns, M. J. P., & Morey, G. B. (1985). Geologic map index of Minnesota (2nd ed.). University of Minnesota, Minnesota Geological Survey.

Chicago Style (17th ed.) Citation

Wahl, Timothy E., Mary Jo P. Kuhns, and G. B. Morey. Geologic Map Index of Minnesota. 2nd ed. [St. Paul, Minn.]: University of Minnesota, Minnesota Geological Survey, 1985.

MLA (9th ed.) Citation

Wahl, Timothy E., et al. Geologic Map Index of Minnesota. 2nd ed. University of Minnesota, Minnesota Geological Survey, 1985.