Cornes, R. (1990). Business systems design and development. Prentice-Hall.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCornes, Ralph. Business Systems Design and Development. New York: Prentice-Hall, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCornes, Ralph. Business Systems Design and Development. Prentice-Hall, 1990.
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