PORTER MICHAEL E. (1980). COMPETITIVE STRATEGY: TECHNIQUES FOR ANALYSING ...COMPETITORS. FREE PRESS.
Chicago Style (17th ed.) CitationPORTER MICHAEL E. COMPETITIVE STRATEGY: TECHNIQUES FOR ANALYSING ...COMPETITORS. NEW YORK LONDON: FREE PRESS, 1980.
MLA (9th ed.) CitationPORTER MICHAEL E. COMPETITIVE STRATEGY: TECHNIQUES FOR ANALYSING ...COMPETITORS. FREE PRESS, 1980.
Warning: These citations may not always be 100% accurate.