Cashman, Thomas J.
Anaheim Publishing, 1970
Buku Teks
Thomas, Harry E.
Prentice-Hall, 1970
Buku Referensi
Carroll, Harry
John Wiley & Sons, 1974
Buku Teks
edited by Nitin Indurkhya; Fred J. Damerau
CRC Press, 2010
Buku Teks
Russ, John C.
CRC Press, 2011
Buku Teks