Butlin, S.J.
Australian War Memorial, 1955
Buku Teks SO
Gilbert, Martin
Routledge, 1994
Buku Teks
Steinbeck, John, 1902-1968
The Viking Press, 1958
Buku Teks SO
Cambridge University Press, 2015
Buku Teks SO
Esposito, Vincnet
Praeger, 1965
Buku Teks SO