Alan Walker, Liam Foster, editors
Elgar Research Colection, 2014
Buku Teks
Gustavo De Santis, editor
Springer, 2012
eBooks
Cambridge University Press, 2005
Buku Teks
edited by Chris Phillipson and Dale Dannefer
SAGE Publications, 2010
Buku Teks
Blaikie, Andrew
Cambridge University Press, 1999
Buku Teks