Summerson, John
Penguin Books, 1958
Buku Teks
Churchill, Winston, Sir, 1874-1965, author
Dodd, Mead, 1956
Buku Teks
Lindsay Allanson-Jones, editor
Cambridge Univ Press, 2011
Buku Teks
Wasson, Ellis, author
Wiley-Blackwell, 2010
Buku Teks
Evans, David, author
Routledge, 1997
Buku Teks