Williamson, Richard E.
Prentice-Hall, 1979
Buku Teks
Coddington, Earl A., author
Society for Industrial and Applied Mathematics, 1997
eBooks
Bolton, W. (William), 1933-, author
Longman Scientific & Technical, 1995
Buku Teks
Springer-Verlag, 1991
Buku Teks
Cheng, David K., author
Addison-Wesley, 1979
Buku Teks