Barrett Derm. (1997). Paradox Process: Creative Business Solutions, where you least expect to find them. Amacom , American Management Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBarrett Derm. Paradox Process: Creative Business Solutions, Where You Least Expect to Find Them. NewYork: Amacom , American Management Association, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBarrett Derm. Paradox Process: Creative Business Solutions, Where You Least Expect to Find Them. Amacom , American Management Association, 1997.
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