Barrante, James R.
Pearson Prentice Hall, 2004
Buku Teks SO
Friedman, Avner
Society for Industrial and Applied Mathematics, 1994
eBooks
Russell, Bertrand, 1872-1970
George Allen and Unwin, 1956
Buku Teks SO
Novak, David
D.C. Health , 1989
Buku Teks SO
Tomasowa, Francien Herlen
Lembaga Penerbitan Fakultas Pertanian Universitas Brawijaya, 2004
Buku Teks SO