Luger, George F., author
The Benjamin/Cummings , 1989
Buku Teks
Harmon, Paul, author
John Wiley & Sons, 1985
Buku Teks
edited by Daniel A. DeSalvo and Jay Liebowitz
Prentice-Hall, 1990
Buku Teks
Rolston, David W., author
McGraw-Hill, 1988
Buku Teks
Medsker, Larry, author
Macmillan Publishing company, 1994
Buku Teks