edited by Nicholas Benwell
Halsted Press, 1975
Buku Teks
Mandrioli, Dino
John Wiley & Sons, 1987
Buku Teks
Fejer, Peter A.
Springer-Verlag, 1991
Buku Teks
Arnold, A.
Prentice-Hall, 1996
Buku Teks
Forsythe, Alexander I.
John Wiley & Sons Inc. , 1970
Buku Teks