Não informado. (2002). Business geographics. Gis World.
Chicago Style (17th ed.) CitationNão informado. Business Geographics. Fort Collins, Colo: Gis World, 2002.
MLA (8th ed.) CitationNão informado. Business Geographics. Gis World, 2002.
Warning: These citations may not always be 100% accurate.