Não informado. (2001). Business and economic history. University of Illinois, Bureau of Economic and Business Research.
Citação do estilo Chicago (17ª ed.)Não informado. Business and Economic History. Urbana, Ill: University of Illinois, Bureau of Economic and Business Research, 2001.
Citação MLA (8ª ed.)Não informado. Business and Economic History. University of Illinois, Bureau of Economic and Business Research, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.