Ishikawa, Kaoru, author
Prentice-Hall, 1985
Buku Teks
Ott, Ellis R
McGraw-Hill, 1990
Buku Teks
Lewis, Ralph G., author
St. Lucie Press, 1994
Buku Teks
Fandy Tjiptono, author
Andi Offset, 1996
Buku Teks
by Dale H. Besterfield ... [and others]
Prentice-Hall, 1995
Buku Teks