Wormer, Katherine Stuart van, author
Oxford University Press, 2017
Buku Teks
Locke, Piers, author
Oxford University Press, 2016
eBooks
Zed Books Ltd., 1988
Buku Teks
Phillips, Richard, 1965-, author
Sage, 2012
Buku Teks
Diez-Hochleitner, Ricardo, author
I.B. Tauris, 2008
Buku Teks