MANKIDY JACOB. (1989). QUALITY CIRCLES: CONCEPT,RATIMALE AND METHODOLOGY. HIMALAYA PUBLISHING HOUSE.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMANKIDY JACOB. QUALITY CIRCLES: CONCEPT,RATIMALE AND METHODOLOGY. BOMBAY: HIMALAYA PUBLISHING HOUSE, 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMANKIDY JACOB. QUALITY CIRCLES: CONCEPT,RATIMALE AND METHODOLOGY. HIMALAYA PUBLISHING HOUSE, 1989.
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