Keiser, Gerd, author
McGraw-Hill, 2002
Buku Teks
editor, Geoffrey Carter ; contributors Lynda Edwards ... [et al.]
Heinemann Computers in Education published in conjuction with International Computers, 1984
Buku Teks
Hammond, Joseph L., author
Addison-Wesley, 1986
Buku Teks
Chorafas, Dimitris N., author
McGraw-Hill, 1984
Buku Teks
Intertext Publications, 1992
Buku Teks