Spina, V. (1997). Success 2000 : moving into the millennium with: Purpose, power, and prosperity. Wiley.
Citace podle Chicago (17th ed.)Spina, Vicki. Success 2000 : Moving into the Millennium with: Purpose, Power, and Prosperity. New york: Wiley, 1997.
Citace podle MLA (9th ed.)Spina, Vicki. Success 2000 : Moving into the Millennium with: Purpose, Power, and Prosperity. Wiley, 1997.
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