Porter, M. E. (2004). Competitive Strategy: Techniques for Analyzing Industries and Competitors. Free Press.
芝加哥风格引文Porter, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. New York.: Free Press, 2004.
MLA引文Porter, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. Free Press, 2004.
警告：这些引文格式不一定是100％准确.