Rigby, R. (2011). 28 Business Thinkers Who Changed the World. Kogan Page.
Chicago-čujuhus (17. p.)Rigby, Rhymer. 28 Business Thinkers Who Changed the World. Kogan Page, 2011.
MLA-čujuhus (9. p.)Rigby, Rhymer. 28 Business Thinkers Who Changed the World. Kogan Page, 2011.
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