Buku Teks
Roberts, A. J., author
Society for Industrial and Applied Mathematics, 2009
eBooks
Ewen, Dale, author
Thomson Brooks/Cole, 2007
Buku Teks
Connelly, James F., author
Macmillan, 1978
Buku Teks
Washington, Allyn J., author
Cummings Menlo Park, 1969
Buku Teks