Lazarsfeld, Paul F., author
Amo Press, 1971
Buku Teks
Van Valkenburg, M.E. (Mac Elwyn), author
Prentice-Hall, 1982
Buku Teks
Sedra, Adel S., author
OXford University Press, 1991
Buku Teks
Graf, Rudolf F., author
Newnes, 1997
Buku Teks
Graf, Rudolf F., author
Newnes, 1997
Buku Teks