Cox, Archibald, 1912-2004, author
Houghton Mifflin, 1987
Buku Teks
Jennings, Ivor, Sir, 1903-1965, author
Hodder and Stoughton, 1979
Buku Teks
Buku Teks
Richards, David A.J.
Oxford University Press, 1986
Buku Teks
[date of publication not identified]
Buku Teks