BOWMAN CLIFF. (1997). ESSENCE OF COMPETITIVE STRATEGY. PRENTICE -HALL INTERNATIONAL; INC.
Cita Chicago (17th ed.)BOWMAN CLIFF. ESSENCE OF COMPETITIVE STRATEGY. NEW JERSEY;USA: PRENTICE -HALL INTERNATIONAL; INC, 1997.
Cita MLA (9th ed.)BOWMAN CLIFF. ESSENCE OF COMPETITIVE STRATEGY. PRENTICE -HALL INTERNATIONAL; INC, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.