Schaffer, Richard
West , 1996
Buku Teks
Friedland, Jerold A., author
Lexis, 2014
Buku Teks
Stephan, Paul B.
Charlottesville, 1996
Buku Teks
Lowenfeld, Andreas F., author
Matthew Bender, 1983
Buku Teks
Lowenfeld, Andreas F., author
Matthew Bender, 1988
Buku Teks