Ayer, Steve J., 1956-, author
McGraw-Hill, 1992
Buku Teks
Addison-Wesley, 2003
Buku Teks
Martin, James, author
Prentice-Hall, 1988
Buku Teks
Dickinson, Brian, author
Yourdon Press, 1980
Buku Teks
editor, M.J. Dooher ; associate editor, V. Marquis
American Management Association, 1953
Buku Teks