Winter, T. C., Cotter, R. D., & Young, H. L. (1973). Petrography and stratigraphy of glacial drift, Mesabi-Vermilion iron range area, northeastern Minnesota. United States Government Printing Office.
Chicago-Zitierstil (17. Ausg.)Winter, Thomas C., R. D. Cotter, und H. L. Young. Petrography and Stratigraphy of Glacial Drift, Mesabi-Vermilion Iron Range Area, Northeastern Minnesota. Washington: United States Government Printing Office, 1973.
MLA-Zitierstil (9. Ausg.)Winter, Thomas C., et al. Petrography and Stratigraphy of Glacial Drift, Mesabi-Vermilion Iron Range Area, Northeastern Minnesota. United States Government Printing Office, 1973.
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