PORTER MICHAEL E. (1983). CASES IN COMPETITIVE STRATEGY. FREE PRESS.
Chicago-čujuhus (17. p.)PORTER MICHAEL E. CASES IN COMPETITIVE STRATEGY. NEW YORK LONDON: FREE PRESS, 1983.
MLA-čujuhus (9. p.)PORTER MICHAEL E. CASES IN COMPETITIVE STRATEGY. FREE PRESS, 1983.
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