APA (7e ed.) Bronvermelding

Não informado. (2008). Illinois Natural History Survey Bulletin. Illinois Natural History Survey.

Chicago (17e ed.) Bronvermelding

Não informado. Illinois Natural History Survey Bulletin. Champaign, Ill: Illinois Natural History Survey, 2008.

MLA (8e ed.) Bronvermelding

Não informado. Illinois Natural History Survey Bulletin. Illinois Natural History Survey, 2008.

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