(1990). Bedrock geologic map of parts of Koochiching, Itasca, and Beltrami counties, North-central Minnesota (corrected version.). Univ. of Minnesota.
Chicago-Zitierstil (17. Ausg.)Bedrock Geologic Map of Parts of Koochiching, Itasca, and Beltrami Counties, North-central Minnesota. corrected version. St. Paul: Univ. of Minnesota, 1990.
MLA-Zitierstil (9. Ausg.)Bedrock Geologic Map of Parts of Koochiching, Itasca, and Beltrami Counties, North-central Minnesota. corrected version. Univ. of Minnesota, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.