Beam, W. R. (1990). Systems engineering: Architecture anad design. McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBeam, Walter R. Systems Engineering: Architecture Anad Design. New York: McGraw-Hill, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBeam, Walter R. Systems Engineering: Architecture Anad Design. McGraw-Hill, 1990.
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