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