APA (7e ed.) Bronvermelding

PORTER, M. E. (1980). Competitive Strategy Techniques For Analyzing Industies And Competitors Michael E. Porter. the Free Press.

Chicago (17e ed.) Bronvermelding

PORTER, Michael E. Competitive Strategy Techniques For Analyzing Industies And Competitors Michael E. Porter. the Free Press, 1980.

MLA (8e ed.) Bronvermelding

PORTER, Michael E. Competitive Strategy Techniques For Analyzing Industies And Competitors Michael E. Porter. the Free Press, 1980.

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