Sutcliffe, H., author
Longman, 1964
Buku Teks
Hill, W. Ryland, author
McGraw-Hill, 1961
Buku Teks
Metha, V.K., author
S. Chand, 1997
Buku Teks
edited by David E. Keyes and Gonald G. Truhlar
Society for Industrial and applied Mathematics, 1995
Buku Teks
Ryder, John D.
McGraw-Hill, [date of publication not identified]
Buku Teks