Não informado. (2001). Bulletin of the Wisconsin Geological and Natural History Survey. Wisconsin Geological and Natural History Survey.
Čikaški stil citiranja (17. izdanje)Não informado. Bulletin of the Wisconsin Geological and Natural History Survey. Madison, Wis: Wisconsin Geological and Natural History Survey, 2001.
MLA način citiranja (8. izdanje)Não informado. Bulletin of the Wisconsin Geological and Natural History Survey. Wisconsin Geological and Natural History Survey, 2001.
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