APA Citatie

Crosby, P. B. (1979). Quality is free: The art of making quality certain. New York: McGraw-Hill.

Chicago Style citaat

Crosby, Philip B. Quality Is Free: The Art of Making Quality Certain. New York: McGraw-Hill, 1979.

MLA citatie

Crosby, Philip B. Quality Is Free: The Art of Making Quality Certain. New York: McGraw-Hill, 1979.

Let op: Deze citaties zijn niet altijd 100% accuraat.