Oprah Winfrey Debuts as First African-American On BusinessWeek's Annual Ranking of 'Americas Top Philanthropists' [online]. Urban Mecca, 2004-11-19, [cit. 2007-03-04]. Dostupné online. Archivované 2004-11-20 z originálu.
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Oprah Winfrey Debuts as First African-American On BusinessWeek's Annual Ranking of 'Americas Top Philanthropists' [online]. Urban Mecca, 2004-11-19, [cit. 2007-03-04]. Dostupné online. Archivované 2004-11-20 z originálu.