VIEIRA WALTER. (2005). MANAGER TO CEO: CORPORATE WISDOM FOR SURVIVAL AND SUCCESS. RESPONSE BOOKS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVIEIRA WALTER. MANAGER TO CEO: CORPORATE WISDOM FOR SURVIVAL AND SUCCESS. LONDON: RESPONSE BOOKS, 2005.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVIEIRA WALTER. MANAGER TO CEO: CORPORATE WISDOM FOR SURVIVAL AND SUCCESS. RESPONSE BOOKS, 2005.
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