APA (7 वां संस्करण) प्रशस्ति पत्र

(2011). How Apple INC Changed the World O'Grady, Jason D. Harvard Business School.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

How Apple INC Changed the World O'Grady, Jason D. Boston: Harvard Business School, 2011.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

How Apple INC Changed the World O'Grady, Jason D. Harvard Business School, 2011.