Cita APA (7a ed.)

PORTER, M. E. (1990). The Competitive Advantage On Nations. the Free Press.

Cita Chicago Style (17a ed.)

PORTER, Michael E. The Competitive Advantage On Nations. the Free Press, 1990.

Cita MLA (8a ed.)

PORTER, Michael E. The Competitive Advantage On Nations. the Free Press, 1990.