Nazareth, John Lawrence
Oxford University Press, 1987
Buku Teks
Crouch, Ralph
Scott, Foresman, 1966
Buku Teks
George, Alan
Prentice-Hall, 1981
Buku Teks
Springer-Verlag, 1991
Buku Teks
Barrett, Richard
Society for Industrial and Applied Mathematics, 1994
eBooks