Oxborrow, Mike
McGraw-Hill, 1993
Buku Referensi
Hamilton, Graham, author
Addison-Wesley, 1997
Buku Teks
Connoly, Thomas, author
Addison-Wesley, 1996
Buku Teks
Rudd, Anthony S.
Ellis Horwood, 1991
Buku Teks
Connolly, Thomas M., author
Addison-Wesley , 2005
Buku Teks