Não informado. (2009). Occasional Publications of the Department of Geography. University of Illinois at Urbana-Champaign.
Style de citation Chicago (17e éd.)Não informado. Occasional Publications of the Department of Geography. Urbana, Ill: University of Illinois at Urbana-Champaign, 2009.
Style de citation MLA (8e éd.)Não informado. Occasional Publications of the Department of Geography. University of Illinois at Urbana-Champaign, 2009.
Attention : ces citations peuvent ne pas être correctes à 100%.