Schonberger, R. J. (1997). Operations management: Customer-focused principles. Irwin.
Cita Chicago (17th ed.)Schonberger, Richard J. Operations Management: Customer-focused Principles. Chicago: Irwin, 1997.
Cita MLA (9th ed.)Schonberger, Richard J. Operations Management: Customer-focused Principles. Irwin, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.