Gaya APA

Porter, Michael E. (1990). The competitive advantage of nations . New York: The Free Press.

Gaya Chicago

Porter, Michael E. The competitive advantage of nations. New York: The Free Press, 1990. Buku.

Gaya MLA

Porter, Michael E. The competitive advantage of nations. New York: The Free Press, 1990. Buku.

Gaya Turabian

Porter, Michael E. The competitive advantage of nations. New York: The Free Press, 1990. Buku.