Berry, David M. (David Michael), author
Polity Press, 2017
Buku Teks
Gardiner, Eileen, author
Cambridge University Press, 2015
Buku Teks
Gardiner, Eileen, author
Cambridge University Press, 2015
Buku Teks
Pertierra, Anna Cristina, author
Polity Press, 2018
Buku Teks
Edited by Bill Cope
Chandos Publshing, 2006
Buku Teks