Cita APA

Crosby, P. B. (1979). Quality is free: The art of making quality certain. New York: A Mentor Book.

Chicago Style Citation

Crosby, Philip B. Quality Is Free: The Art of Making Quality Certain. New York: A Mentor Book, 1979.

Cita MLA

Crosby, Philip B. Quality Is Free: The Art of Making Quality Certain. New York: A Mentor Book, 1979.

Atenció: Aquestes cites poden no estar 100% correctes.