Não informado. (1944). Illinois business review. University of Illinois, Bureau of Economic and Business Research.
Citação do estilo Chicago (17ª ed.)Não informado. Illinois Business Review. Urbana, Ill: University of Illinois, Bureau of Economic and Business Research, 1944.
Citação MLA (8ª ed.)Não informado. Illinois Business Review. University of Illinois, Bureau of Economic and Business Research, 1944.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.