CHANDRA DURGESH. (1991). QUALITY CIRCLES: GROWING BIG THROUGH SMALL GROUP. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCHANDRA DURGESH. QUALITY CIRCLES: GROWING BIG THROUGH SMALL GROUP. DELHI: TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 1991.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCHANDRA DURGESH. QUALITY CIRCLES: GROWING BIG THROUGH SMALL GROUP. TATA MCGRAW-HILL PUBLISHING COMPANY LIMITED, 1991.
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