Ingle, S. (1982). Quality circles master guide: Increasing productivity with people power. New York: Prentice-Hall.
Chicago Style aipamenaIngle, Sud. Quality Circles Master Guide: Increasing Productivity With People Power. New York: Prentice-Hall, 1982.
MLA aipamenaIngle, Sud. Quality Circles Master Guide: Increasing Productivity With People Power. New York: Prentice-Hall, 1982.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.