Griffin, Ricky W., author
Prentice-Hall, 2002
Buku Teks
Wheeler, Bayard O.
Harper & Row. Publisher, 1968
Buku Teks
Lind, Douglas A., author
McGraw-Hill-Irwin, 2010
Buku Teks
Durie, Bruce, author
[publisher not identified], 2001
Buku Teks
Atkinson, Brian, author
Addison - Wesley , 1998
Buku Teks