Woll, Peter, author
Little, Brown , 1986
Buku Teks
Agresto, John
Cornell University Press, 1984
Buku Teks
Feith, Herbert
Cornell University Press, 1968
Buku Teks
Feith, Herbert
Equinox, 2007
Buku Teks
Woll, Peter, author
Little, Brown, 1982
Buku Teks