APA ציטוט

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

Trích dẫn kiểu Chicago

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

ציטוט MLA

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