Hart, Gary C.
Prentice-Hall, 1982
Buku Teks SO
Leporati, Ezio
Research Studies Press, 1979
Buku Teks
Buchanan, Andrew Hamilton
John Wiley & Sons, 2001
Buku Teks SO
edited by W.F. Chen and E.M. Lui
CRC/Taylor & Francis, 2006
Buku Teks SO
Thoft-Christensen, Palle
Springer, 1982
Buku Teks SO