Buzo, Alex
Penguin Books, 1988
Buku Teks
McGuire, Paul
Oxford University Press, 1948
Buku Teks
Elam, Keir, author
Methuen, 1980
Buku Teks
Csato, Edward
Interpress Publishers, 1968
Buku Teks
De Mallet Burgess, Thomas, author
Routledge, 2000
Buku Referensi