BLACKBURN LAWRENCE. (1985). INTRODUCING OPERATING SYSTEMS. PITMAN PUBLICATIONS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBLACKBURN LAWRENCE. INTRODUCING OPERATING SYSTEMS. LONDON: PITMAN PUBLICATIONS, 1985.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBLACKBURN LAWRENCE. INTRODUCING OPERATING SYSTEMS. PITMAN PUBLICATIONS, 1985.
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