edited by William Walsh
Clarendon Press, 1973
Buku Teks
C.S. Lim
The Department of English University of Malaya, [date of publication no identified]
Buku Teks
Elton, Lord
Collins, 1945
Buku Teks
Mansergh, Nicholas
Royal Institute Of International Affair, 1948
Buku Teks
Caiden, Gerald E.
Melbourne University Press, 1967
Buku Teks