Hicks, Lanis L.
Jones & Bartlett Learning, 2014
Buku Teks
Folland, Sherman
Prentice-Hall, 2001
Buku Teks
edited by Andrew M. Jones
Edward Elgar, 2012
Buku Teks
Ruchlin, Hirsch S.
Charles C. Thomas, 1973
Buku Teks
Feldstein, Paul J.
Delmar, 2012
Buku Teks