edited by Christopher Dowrick and Lucy Frith
Routledge, 1999
Buku Teks
Crawford, James, author
Cambridge University Press, 2014
Buku Teks
Walker, Lynne, author
McGraw-Hill, 2010
Buku Teks
Kaplan, Norman M., 1931-, author
Martin Dunitz Press, 2001
Buku Teks
edited by Muir Gray and Godfrey Fowler
Oxford University Press, 1983
Buku Teks