Anton, Howard, author
Erlangga, 1992
Buku Teks
Anton, Howard, author
Binarupa Aksara , [Date of publication not identified]
Buku Teks
Hartley, B., author
Chapman and Hall, 1992
Buku Teks
Noble, Ben, author
Prentice-Hall, 1977
Buku Teks
Gruber, Marvin H. J., 1941, author
Wiley, 2014
Buku Teks