Cita APA (7a ed.)

Walker, G. (2009). Modern competitive strategy (Third edition.). McGraw-Hill/Irwin.

Cita Chicago Style (17a ed.)

Walker, Gordon. Modern Competitive Strategy. Third edition. New York: McGraw-Hill/Irwin, 2009.

Cita MLA (9a ed.)

Walker, Gordon. Modern Competitive Strategy. Third edition. McGraw-Hill/Irwin, 2009.