Dando, Sylvia, author
McGraw-Hill Book, 1987
Buku Referensi
Borland International, 1988
Buku Teks
Poynter, Dan
Para Publishing, 1982
Buku Teks
Graver, Robert T., author
Prentice-Hall, 2001
Buku Teks
Donny Gunawan, author
Elex Media Komputindo, 1990
Buku Teks