Porter, M. E. (1998). Competitive Strategy (ain.). Simon & Schuster UK Ltd.
芝加哥风格引文Porter, Michael E. Competitive Strategy. ain. Great Brit: Simon & Schuster UK Ltd, 1998.
MLA引文Porter, Michael E. Competitive Strategy. ain. Simon & Schuster UK Ltd, 1998.
警告：这些引文格式不一定是100％准确.