Porter, Alan G.
Reading, Mass.: Addison-Wesley, c1985
Buku Teks
Norton, Peter, author
Microsoft Corp., 1985
Buku Teks
Norton, Peter, author
[publisher not identified], [date of publication not identified]
Buku Teks
Krumm, Robert, author
A Brady Book, 1987
Buku Teks
Krumm, Robert, author
Prentice-Hall, 1987
Buku Teks