edited by Peter Roberts and Hugh Sykes
Sage, 2003
Buku Referensi
edited by Peter Roberts, Hugh Sykes
Sage Publications, 2003
Buku Referensi
Tonkiss, Fran, author
Polity Press, 2013
Buku Teks
McGraw-Hill, 2000
Buku Teks
Powell, Kennetth
te Neues, 2000
Buku Teks