Porter, M. E. (1985). Competitive advantage. New York: The Free Press.
シカゴスタイル引用形Porter, Michael E. Competitive Advantage. New York: The Free Press, 1985.
MLA引用形式Porter, Michael E. Competitive Advantage. New York: The Free Press, 1985.
警告: この引用は必ずしも正確ではありません.