Vernon, Mark
RajaGrafindo Persada, 2011
Buku Teks
Hayward, Susan
Routledge , 2006
Buku Referensi
edited by Andrew Edgar and Peter Sedgwick
Routledge , 2006
Buku Teks
Bernadette Casey.... (et all...)
Routledge , 2008
Buku Teks
Winch, Christopher
Routledge, 2008
Buku Teks