Stevens, Wayne P.
John Wiley & Sons, 1981
Buku Teks
Higgins, David, author
Prentice-Hall, 1983
Buku Teks
Dickinson, Brian, author
Yourdon Press, 1980
Buku Teks
Hughes, Joan K., author
John Wiley & Sons, 1981
Buku Teks
Tondo, Clovis L., author
Prentice-Hall, 1992
Buku Teks