Brezonik, Patrick L., author
Lewis Publishers, 1994
Buku Teks
Houston, Paul L, author
McGraw-Hill , 2001
Buku Teks
Steinfeld, Jeffrey I., author
Prentice-Hall, 1999
Buku Teks
Entelis, S.G., author
John Wiley & Sons, 1976
Buku Teks
Billing, Gert D., author
John Wiley & Sons, 1997
Buku Teks