Mankidy,Jacob. (1989). Quality Circles: Concepts,Rationale and Methodology. himalaya.
Chicago Style aipamenaMankidy,Jacob. Quality Circles: Concepts,Rationale and Methodology. bombay: himalaya, 1989.
MLA aipamenaMankidy,Jacob. Quality Circles: Concepts,Rationale and Methodology. himalaya, 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.