Silvester, P.P., author
Oxford University Press, 1989
Buku Teks
Fry, T. F., author
Butterworth, 1981
Buku Teks
Charles
Harvard University Press, 1973
Buku Teks
Flores, Ivan, author
Prentice-Hall, 1969
Buku Teks
Ritterman, Saul A., author
McGraw-Hill, 1986
Buku Teks