Garrard, Judith
Jones & Bartlett Learning, 2011
Buku Teks
Eaglestone, Robert
Routledge , 2005
Buku Teks
Wilson, John B.
Longmans Green , 1958
Buku Teks
Bateson, FW
Longmans , 1965
Buku Teks
edited by Ian Qusby
Cambridge University Press, 1988
Buku Referensi