APA (7e ed.) Bronvermelding

PORTER MICHAEL. (2004). COMPETITIVE STRATEGY: TECHNIQUES FOR ANALYZING INDUSTRIES AND COMPETITORS. THE FREE PRESS.

Chicago (17e ed.) Bronvermelding

PORTER MICHAEL. COMPETITIVE STRATEGY: TECHNIQUES FOR ANALYZING INDUSTRIES AND COMPETITORS. NEW YORK: THE FREE PRESS, 2004.

MLA (9e ed.) Bronvermelding

PORTER MICHAEL. COMPETITIVE STRATEGY: TECHNIQUES FOR ANALYZING INDUSTRIES AND COMPETITORS. THE FREE PRESS, 2004.

Let op: Deze citaties zijn niet altijd 100% accuraat.