PORTER, M. E. (1985). Competitive Advantage Creating And Sustaining Superior Performance Michael E. Porter. the Free Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPORTER, Michael E. Competitive Advantage Creating And Sustaining Superior Performance Michael E. Porter. the Free Press, 1985.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPORTER, Michael E. Competitive Advantage Creating And Sustaining Superior Performance Michael E. Porter. the Free Press, 1985.
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