Inman, Don, author
John Wiley & Sons, 1981
Buku Teks
Tigor, Surawidjaja Nauli, author
Gramedia Pustaka Utama , 1992
Buku Teks
Gottfried, Byron S., author
Erlangga, 1988
Buku Teks
Microsoft, 1987
Buku Teks
O`Dell, Jerry W., author
TAB Books, 1984
Buku Teks