charbonneau, Harvey c.
Prentice-Hall, 1978
Buku Teks
Samson, Charles
Addison-Wesley , 1970
Buku Teks
Wadsworth, Harrison M., author
John Wiley & Sons, 2001
Buku Teks
J.M. Juran, editor-in-chief; Frank M. Gryna, associate editor
McGraw-Hill, 1988
Buku Referensi
Grant, Eugene L. (Eugene Lodewick), author
McGraw-Hill, 1996
Buku Teks