PORTER, M. E. (1980). Competitive Strategy Techniques For Analyzing Industies And Competitors Michael E. Porter. the Free Press.
Citace podle Chicago (17th ed.)PORTER, Michael E. Competitive Strategy Techniques For Analyzing Industies And Competitors Michael E. Porter. the Free Press, 1980.
Citace podle MLA (8th ed.)PORTER, Michael E. Competitive Strategy Techniques For Analyzing Industies And Competitors Michael E. Porter. the Free Press, 1980.
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