APA Style
Crosby, Philip B. (1979).
Quality is free : the art of making quality certain / Philip B. Crosby (Edisi Pertama).
New York:
New American Library.
Chicago Style
Crosby, Philip B.
Quality is free : the art of making quality certain / Philip B. Crosby.
Edisi Pertama
New York:
New American Library,
1979.
Text.
MLA Style
Crosby, Philip B.
Quality is free : the art of making quality certain / Philip B. Crosby.
Edisi Pertama
New York:
New American Library,
1979.
Text.
Turabian Style
Crosby, Philip B.
Quality is free : the art of making quality certain / Philip B. Crosby.
Edisi Pertama
New York:
New American Library,
1979.
Print.