APA (7th ed.) Citation

Sims, P. K., & Mudrey, M. G. (1978). Geologic map of the Shagawa Lake quadrangle, St. Louis County, Minnesota. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Sims, P. K., and M. G. Mudrey. Geologic Map of the Shagawa Lake Quadrangle, St. Louis County, Minnesota. Reston, Va.: U.S. Geological Survey, 1978.

MLA (9th ed.) Citation

Sims, P. K., and M. G. Mudrey. Geologic Map of the Shagawa Lake Quadrangle, St. Louis County, Minnesota. U.S. Geological Survey, 1978.