Não informado. (1967). MSU business topics. Michigan State University, Bureau of Business and Economic Research.
Citação do estilo Chicago (17ª ed.)Não informado. MSU Business Topics. East Lansing, Mich: Michigan State University, Bureau of Business and Economic Research, 1967.
Citação MLA (8ª ed.)Não informado. MSU Business Topics. Michigan State University, Bureau of Business and Economic Research, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.