BOWMAN CLIFF. (1997). ESSENCE OF COMPETITIVE STRATEGY. PRENTICE -HALL INTERNATIONAL; INC.
Chicago-viite (17. p.)BOWMAN CLIFF. ESSENCE OF COMPETITIVE STRATEGY. NEW JERSEY;USA: PRENTICE -HALL INTERNATIONAL; INC, 1997.
MLA-viite (9. p.)BOWMAN CLIFF. ESSENCE OF COMPETITIVE STRATEGY. PRENTICE -HALL INTERNATIONAL; INC, 1997.
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