Manktelow, James, author
Signal House, 2004
Buku Teks
Fox, William M
Jossey Bass, 1987
Buku Teks
O`connor, Joseph, author
Thorsons, 1997
Buku Teks
Briggs, William, author
Society for Industrial and Applied Mathematics, 2005
eBooks
Nadler, Gerald
California Prima Publishing 1998.,
Buku Teks