Segal, Inna, author
Atria Paperback, 2010
Buku Teks
Brown, Louis D., author
[Springer, ], 2012
eBooks
Groves, Patricia
Harper Collines Publishers , 1992
Buku Teks
Buckley, Andrew, author
Routledge , 2006
Buku Teks
Gladston, William
Pustaka Sinar Harapan, 1983
Buku Teks