APA ציטוט

PORTER MICHAEL E. (1980). COMPETITIVE STRATEGY: TECHNIQUES FOR ANALYSING INDUSTRIES AND COMPETITORS. FREE PRESS.

Chicago Style (17th ed.) Citation

PORTER MICHAEL E. COMPETITIVE STRATEGY: TECHNIQUES FOR ANALYSING INDUSTRIES AND COMPETITORS. LONDON NEW YORK: FREE PRESS, 1980.

ציטוט MLA

PORTER MICHAEL E. COMPETITIVE STRATEGY: TECHNIQUES FOR ANALYSING INDUSTRIES AND COMPETITORS. FREE PRESS, 1980.