Davis, Philip J.
John Wiley & Sons, 1979
Buku Teks
Liebeck, Pamela
Oxford Pergamon Press 1971,
Buku Teks
EBSCOhost,
Multimedia
Briggs, William L.
Society for Industrial and Applied Mathematics, 2000
eBooks
Perlis, Sam
Addison-Wesley Pub. Co. , 1958
Buku Teks