Greenwald, B. C., & Kahn, J. (2005). Competition demystified: A radically simplified approach to business strategy. Portfolio.
Chicago (17e ed.) BronvermeldingGreenwald, Bruce C., en Judd Kahn. Competition Demystified: A Radically Simplified Approach to Business Strategy. New York: Portfolio, 2005.
MLA (9e ed.) BronvermeldingGreenwald, Bruce C., en Judd Kahn. Competition Demystified: A Radically Simplified Approach to Business Strategy. Portfolio, 2005.