Não informado. (1961). Illinois agricultural economics. University of Illinois, Department of Agricultural Economics.
Chicago Style (17th ed.) CitationNão informado. Illinois Agricultural Economics. Urbana, Ill: University of Illinois, Department of Agricultural Economics, 1961.
MLA (8th ed.) CitationNão informado. Illinois Agricultural Economics. University of Illinois, Department of Agricultural Economics, 1961.
Warning: These citations may not always be 100% accurate.