C.S. Lim
The Department of English University of Malaya, [date of publication no identified]
Buku Teks
Foreign and Commonwealth Office
Her Majesty's Stationery Office, 1986
Buku Referensi
Griffiths, Percival, Sir, 1899-, author
Ernest Benn, 1969
Buku Teks
Mansergh, Nicholas, author
Royal Institute Of International Affair, 1948
Buku Teks
Underhill, Frank H., author
Duke University Press, 1956
Buku Teks