APA ציטוט

Porter, M. E. (1998). The competitive advantage of nations: With a new introduction. New York: Free Press.

Trích dẫn kiểu Chicago

Porter, Michael E. The Competitive Advantage of Nations: With a New Introduction. New York: Free Press, 1998.

ציטוט MLA

Porter, Michael E. The Competitive Advantage of Nations: With a New Introduction. New York: Free Press, 1998.