Norton, Peter, author
Microsoft Corp., 1985
Buku Teks
Norton, Peter, author
[publisher not identified], [date of publication not identified]
Buku Teks
Desmonde, William H., author
Prentice-Hall, 1969
Buku Teks
Simpson, Henry, author
McGraw-Hill, 1986
Buku Teks
Davis, Trisha, author
Mecklermedia Corporation, 1994
Buku Teks