Não informado. (2000). Transactions of the Illinois State Academy of Science. Illinois State Academy of Science.
Chicago-referens (17:e uppl.)Não informado. Transactions of the Illinois State Academy of Science. Springfield, Ill: Illinois State Academy of Science, 2000.
MLA-referens (8:e uppl.)Não informado. Transactions of the Illinois State Academy of Science. Illinois State Academy of Science, 2000.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.