Crosby, P. B. (1979). Quality is free: The art of making quality certain. New York: McGraw-Hill.
シカゴスタイル引用形Crosby, Philip B. Quality Is Free: The Art of Making Quality Certain. New York: McGraw-Hill, 1979.
MLA引用形式Crosby, Philip B. Quality Is Free: The Art of Making Quality Certain. New York: McGraw-Hill, 1979.
警告: この引用は必ずしも正確ではありません.