APA (7e ed.) Bronvermelding

Não informado. (2001). Bulletin of the Wisconsin Geological and Natural History Survey. Wisconsin Geological and Natural History Survey.

Chicago (17e ed.) Bronvermelding

Não informado. Bulletin of the Wisconsin Geological and Natural History Survey. Madison, Wis: Wisconsin Geological and Natural History Survey, 2001.

MLA (8e ed.) Bronvermelding

Não informado. Bulletin of the Wisconsin Geological and Natural History Survey. Wisconsin Geological and Natural History Survey, 2001.

Let op: Deze citaties zijn niet altijd 100% accuraat.