McKeeman, W.M., author
Prentice-Hall, 1970
Buku Teks
Gries, David, author
John Wiley & Sons, 1971
Buku Teks
Halstead, Maurice H., author
Elsevier, 1974
Buku Referensi
Schreiner, Axel T., author
Prentice-Hall, 1985
Buku Teks
George, F.H., author
Pergamon Press, 1968
Buku Teks