APA (7th ed.) Citation

Goldich, S. S., Nier, A. O., Baadsgaard, H., Hoffman, J. H., & Krueger, H. W. (1961). Bulletin No. 41. The Precambrian Geology and Geochronology of Minnesota. Minnesota Geological Survey.

Chicago Style (17th ed.) Citation

Goldich, Samuel S., Alfred O. Nier, Halfdan Baadsgaard, John H. Hoffman, and Harold W. Krueger. Bulletin No. 41. The Precambrian Geology and Geochronology of Minnesota. Minnesota Geological Survey, 1961.

MLA (9th ed.) Citation

Goldich, Samuel S., et al. Bulletin No. 41. The Precambrian Geology and Geochronology of Minnesota. Minnesota Geological Survey, 1961.