Cita APA (7th ed.)

PORTER, M. E. (1983). Cases in competitive strategy. The Free Press.

Cita Chicago (17th ed.)

PORTER, Michael E. Cases in Competitive Strategy. New York: The Free Press, 1983.

Cita MLA (9th ed.)

PORTER, Michael E. Cases in Competitive Strategy. The Free Press, 1983.

Atenció: Aquestes cites poden no estar 100% correctes.