Forsythe, Alexander I., author
John Wiley & Sons Inc. , 1970
Buku Teks
Krulee, Gilbert K., author
Prentice-Hall, 1991
Buku Teks
John Wiley & Sons, 1970
Buku Teks
Chapelle, Carol A, author
Cambridge University Press, 2006
Buku Teks
Deitel, Harvey M., 1945-, author
Prentice-Hall, 1977
Buku Teks