Norton, Peter
Microsoft Corp., 1985
Buku Teks
Norton, Peter
[publisher not identified], [date of publication not identified]
Buku Teks
Olsson, Gustaf
Prentice-Hall, 1992
Buku Teks
Harrow, Keith
1986,
Buku Teks
Porter, Alan
Reading, Mass.: Addison-Wesley, c1985
Buku Teks