VOHRA N D. (1990). QUANTITATIVE TECHNIQUES IN MANAGEMENT. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVOHRA N D. QUANTITATIVE TECHNIQUES IN MANAGEMENT. NEW DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 1990.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVOHRA N D. QUANTITATIVE TECHNIQUES IN MANAGEMENT. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 1990.
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