Dey, B. (1988). Quality circles: Concept and practices. Macmillian India.
Chicago Style aipamenaDey, B. Quality Circles: Concept and Practices. Delhi: Macmillian India, 1988.
MLA aipamenaDey, B. Quality Circles: Concept and Practices. Macmillian India, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.