Brands, H. W. (1999). Masters of enterprise: Giants of American business from John Jacob Astor and J. P. Morgan to Bill Gates and Oprah Winfrey. The Free Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Brands, H. W. Masters of Enterprise: Giants of American Business from John Jacob Astor and J. P. Morgan to Bill Gates and Oprah Winfrey. New York, N. Y: The Free Press, 1999.
Παραπομπή σε μορφή MLA (9th εκδ.)Brands, H. W. Masters of Enterprise: Giants of American Business from John Jacob Astor and J. P. Morgan to Bill Gates and Oprah Winfrey. The Free Press, 1999.
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