Fox, William M
Jossey Bass, 1987
Buku Teks
Briggs, William
Society for Industrial and Applied Mathematics, 2005
eBooks
Hodnett, Edward
Harper & Brothers, 1955
Buku Teks
edited by Janet Davidson, Robert J. Sternberg
Cambridge university , 2003
Buku Teks
by Arvid R. Eide ... [and others]
McGraw-Hill, 2012
Buku Teks