APA (7 वां संस्करण) प्रशस्ति पत्र

Porter, M. E. (2008). On competition (Updated and expanded ed.). Harvard Business School Pub.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Porter, Michael E. On Competition. Updated and expanded ed. Boston, MA: Harvard Business School Pub, 2008.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Porter, Michael E. On Competition. Updated and expanded ed. Harvard Business School Pub, 2008.