APA-Zitierstil (7. Ausg.)

(1985). Generalized bedrock geologic map of West-central Vermilion district, Northern Minnesota. U.S. Geological Survey.

Chicago-Zitierstil (17. Ausg.)

Generalized Bedrock Geologic Map of West-central Vermilion District, Northern Minnesota. Reston, V.A. u.a: U.S. Geological Survey, 1985.

MLA-Zitierstil (9. Ausg.)

Generalized Bedrock Geologic Map of West-central Vermilion District, Northern Minnesota. U.S. Geological Survey, 1985.