Não informado. (1900). Bulletin of the Wisconsin Natural History Society. Wisconsin Natural History Society.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Bulletin of the Wisconsin Natural History Society. Milwaukee, Wis: Wisconsin Natural History Society, 1900.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Bulletin of the Wisconsin Natural History Society. Wisconsin Natural History Society, 1900.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.