APA (7th ed.) Citation

PORTER MICHAEL E. (1980). COMPETITIVE STRATEGY TECHNIQUES. FREE PRESS.

Chicago Style (17th ed.) Citation

PORTER MICHAEL E. COMPETITIVE STRATEGY TECHNIQUES. LONDON: FREE PRESS, 1980.

MLA (9th ed.) Citation

PORTER MICHAEL E. COMPETITIVE STRATEGY TECHNIQUES. FREE PRESS, 1980.

Warning: These citations may not always be 100% accurate.