Olson, David Louis, author
McGraw-Hill, 2004
Buku Teks
McLeod, Raymond, author
Macmillan, 1993
Buku Teks
McLeod, Raymond, author
Prentice-Hall, 1995
Buku Teks
McLeod, Raymond, author
Macmillan, 1990
Buku Teks
Laudon, Kenneth C., 1944-, author
Prentice-Hall, 2002
Buku Teks