MANKIDY JACOB. (1989). QUALITY CIRCLES: CONCEPT,RATIMALE AND METHODOLOGY. HIMALAYA PUBLISHING HOUSE.
Chicago Style aipamenaMANKIDY JACOB. QUALITY CIRCLES: CONCEPT,RATIMALE AND METHODOLOGY. BOMBAY: HIMALAYA PUBLISHING HOUSE, 1989.
MLA aipamenaMANKIDY JACOB. QUALITY CIRCLES: CONCEPT,RATIMALE AND METHODOLOGY. HIMALAYA PUBLISHING HOUSE, 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.