Singer, Charles, author
Clarendon Press, 1962
Buku Teks
Varma, S.P., author
RajaGrafindo Persada, 1999, 2007
Buku Teks
Losco, Joseph, author
Radja Grafindo Persada, 2005
Buku Teks
Brecht, Arnold, author
Princenton University Press, 1968
Buku Teks
Friedrich, Carl J., author
Ginn, 1950
Buku Teks