BARWISE PATRICK. (2004). SIMPLY BETTER: WINNING AND KEEPING CUSTOMERS ? MATTERS MOST. HARPER COLLINS PUBLISHERS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBARWISE PATRICK. SIMPLY BETTER: WINNING AND KEEPING CUSTOMERS ? MATTERS MOST. BOSTON: HARPER COLLINS PUBLISHERS, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBARWISE PATRICK. SIMPLY BETTER: WINNING AND KEEPING CUSTOMERS ? MATTERS MOST. HARPER COLLINS PUBLISHERS, 2004.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.