Não informado. (2013). Bulletin of the Illinois Geographical Society. Illinois Geographical Society.
Style de citation Chicago (17e éd.)Não informado. Bulletin of the Illinois Geographical Society. Chicago, Ill: Illinois Geographical Society, 2013.
Style de citation MLA (8e éd.)Não informado. Bulletin of the Illinois Geographical Society. Illinois Geographical Society, 2013.
Attention : ces citations peuvent ne pas être correctes à 100%.