Sewell, R. (1996). The twelve pillars of business success. Kogan Page.
Chicago-čujuhus (17. p.)Sewell, Ron. The Twelve Pillars of Business Success. London: Kogan Page, 1996.
MLA-čujuhus (9. p.)Sewell, Ron. The Twelve Pillars of Business Success. Kogan Page, 1996.
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