ROY MALAY K. (1992). COBOL PROGRAMMING INCLUDING MS-COBOL AND COBOL-85 (2.). TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रROY MALAY K. COBOL PROGRAMMING INCLUDING MS-COBOL AND COBOL-85. 2. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 1992.
एमएलए (9वां संस्करण) प्रशस्ति पत्रROY MALAY K. COBOL PROGRAMMING INCLUDING MS-COBOL AND COBOL-85. 2. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 1992.
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