Asfahl, C. Ray
John Wiley & Sons, 1992
Buku Teks SO
Nicholas D. Adams, Terry W. Brown, Rowland V. D. Firth, Laura P. Misenheimer, editor
McGraw-Hill, 1996
Buku Referensi
Nof, Shimon Y., 1946-
Springer, 2009
Buku Referensi
Groover, Mikell P.
Prentice-Hall, 1987
Buku Teks SO
Groover, Mikell P.
Prentice-Hall of India, 1996
Buku Teks SO