Stasa, frank L
Holt, rinehatd and Winston, 1985
Buku Teks
Burnett, David S.
Addison-Wesley, 1987
Buku Teks
Buchanan, George R.
McGraw-Hill, 1995
Buku Teks
edited by R. Glowinski, E. Y. Rodin, O. C. Zienkiewicz
John Wiley & Sons, 1979
Buku Teks
Martin, Harold Clifford, 1913-
McGraw-Hill, 1973
Buku Teks