LOWIS DAVID. (1990). SECRETS OF LANGAUAGE OF SUCCESS: ACHIEVE IT ALL IN BUSINESS AND LIFE. CORGI BOOK.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLOWIS DAVID. SECRETS OF LANGAUAGE OF SUCCESS: ACHIEVE IT ALL IN BUSINESS AND LIFE. LONDON: CORGI BOOK, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLOWIS DAVID. SECRETS OF LANGAUAGE OF SUCCESS: ACHIEVE IT ALL IN BUSINESS AND LIFE. CORGI BOOK, 1990.
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