Silverman, David, author
Sage Publications , 2010
Buku Teks
Silverman, David, author
Sage, 2000
Buku Teks
Gorman, G.E., author
Facet Publishing, 2005
Buku Teks
Magnusson, Eva, author
Cambridge University Press, 2015
eBooks
Hollway, Wendy, author
Sage, 2003
Buku Teks