Porter, M. E. (1990). The competitive advantage of nations. Macmillan.
Chicago Edition CitationPorter, Michael E. The Competitive Advantage of Nations. London: Macmillan, 1990.
MLA Edition CitationPorter, Michael E. The Competitive Advantage of Nations. Macmillan, 1990.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.