DAS SUMITABHA. (1993). UNIX SYSTEM V 4: CONCEPTS & APPLICATIONS. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDAS SUMITABHA. UNIX SYSTEM V 4: CONCEPTS & APPLICATIONS. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 1993.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDAS SUMITABHA. UNIX SYSTEM V 4: CONCEPTS & APPLICATIONS. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 1993.
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