CLIFTON H D. (1974). SYSTEMS ANALYSIS FOR BUSINESS DATA PROCESSING. PETROCELLI BOOKS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCLIFTON H D. SYSTEMS ANALYSIS FOR BUSINESS DATA PROCESSING. NEW YORK: PETROCELLI BOOKS, 1974.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCLIFTON H D. SYSTEMS ANALYSIS FOR BUSINESS DATA PROCESSING. PETROCELLI BOOKS, 1974.
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