Bunker, Raymond
Melbourne University Press, 1971.
Buku Teks
Gillie, F.B.
The Hague, 1971
Buku Teks
Greed, Clara H.
Longman, 1994
Buku Teks
edited by Andrew Blowers and Bob Evans
Routledge, 1997
Buku Teks
edited by Andrew Blowers, Bob Evans
Routledge, 1997
Buku Teks