Tyree, O. (2009). The equation: Applying the 4 indisputable components of business success. John Wiley & Sons.
Παραπομπή Chicago StyleTyree, Omar. The Equation: Applying the 4 Indisputable Components of Business Success. New Jersey: John Wiley & Sons, 2009.
Παραπομπή MLATyree, Omar. The Equation: Applying the 4 Indisputable Components of Business Success. John Wiley & Sons, 2009.
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