Greenspan, Donald
Pergamon Press, 1981
Buku Teks SO
Rajaraman, V.
Prentice-Hall, 1981
Buku Teks SO
edited by Johan H. Huijsing, Rudy J. van de Plassche, and Willy Sansen
Kluwer Academic, 1993
Buku Teks SO
Ritterman, Saul A.
McGraw-Hill, 1986
Buku Teks SO
Wing, Omar
Holt, Rinehart and Winston, 1972
Buku Teks SO