Toynbee, Arnold J., translator
Osford University Press, 1969
Buku Teks
Chicago : The Modern Poetry Association
Majalah, Jurnal, Buletin
Midgley, Mary
Routledge, 2006
Buku Teks
O`Dowd, Bernard
Angust & Robertson, 1963
Buku Teks
Kennedy, X.J.
Pearson Longman , 2005
Buku Teks