Norton, Peter, author
Microsoft Corp., 1985
Buku Teks
Coats, Robert R., author
Reston Publishing, 1982
Buku Teks
Noll, Paul, author
Mike Murach & Associates, Inc, 1978
Buku Teks
Schechter, David, author
Virginia Publishing, 1982
Buku Teks
Bailey, Duane A., author
McGraw-HIll, 2003
Buku Teks