APA aipamena

PORTER, M. E. (1990). The Competitive Advantage Of Nation Michael E. Porter. the Free Press.

Chicago Style aipamena

PORTER, Michael E. The Competitive Advantage Of Nation Michael E. Porter. the Free Press, 1990.

MLA aipamena

PORTER, Michael E. The Competitive Advantage Of Nation Michael E. Porter. the Free Press, 1990.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.