Porter, M. E. 1. (1998). Competitive strategy: Techniques for analyzing industries and competitors: with a new introduction (1st Free Press ed.). Free Press.
Чикаго маягийн жагсаалтPorter, Michael E. 1947. Competitive Strategy: Techniques for Analyzing Industries and Competitors: With a New Introduction. 1st Free Press ed. New York: Free Press, 1998.
MLA ишлэлPorter, Michael E. 1947. Competitive Strategy: Techniques for Analyzing Industries and Competitors: With a New Introduction. 1st Free Press ed. Free Press, 1998.
Warning: These citations may not always be 100% accurate.