Cita APA

Crosby, P. B. (1980). Quality is free: The art of making quality certain. New York [etc.]: Penguin books.

Citación estilo Chicago

Crosby, Philip B. Quality Is Free: The Art of Making Quality Certain. New York [etc.]: Penguin books, 1980.

Cita MLA

Crosby, Philip B. Quality Is Free: The Art of Making Quality Certain. New York [etc.]: Penguin books, 1980.

Precaución: Estas citas no son 100% exactas.