Porter, M. E. (1980). Competitive strategy: Techniques for analyzing industries and competitors. Free Press.
Chicagoスタイル(17版)引用形式Porter, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. New York: Free Press, 1980.
MLA(9版)引用形式Porter, Michael E. Competitive Strategy: Techniques for Analyzing Industries and Competitors. Free Press, 1980.
警告: この引用は必ずしも正確ではありません.