edited by Auerbach Pub. Inc.
Prentice-Hall, 1981
Buku Teks
Neal, Shirley, author
Prentice-Hall, 1986
Buku Teks
Inmon, W.H., author
Prentice-Hall, 1982
Buku Teks
Kruglinski, David, author
Osborne McGraw-Hill, 1986
Buku Teks
Connoly, Thomas, author
Addison-Wesley, 1996
Buku Teks