Scott, James D.
Prentice-Hall, 1953
Buku Teks
Felton, George, 1947-, author
Prentice-Hall, 1994
Buku Teks
Wells, William D., author
Prentice-Hall, 1992
Buku Teks
Wells, William D., author
Prentice-Hall, 1995
Buku Teks
Bennie, Michael, author
Elex Media Komputindo, 1996
Buku Teks