McClave, James T.
Prentice-Hall, 2001
Buku Teks SO
Daniel, Wayne W.
Houghton Miffiln, 1989
Buku Teks SO
Mann, Prem S.
New York John Wiley & Sons 1995,
Buku Teks
Anderson, David Ray, 1941-
Thomson South-Western, 2008
Multimedia
Anderson, David R.
Thomson, 2008
Buku Teks SO