Artikel Jurnal
Churchill, Winston, Sir, 1874-1965
Houghton Miffiln, 1950
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edited by Arnold Wolfers
[Publisher not identified], 1959
Buku Teks
edited by Richard H. Egdahl and Diana Chapman Walsh
Springer-Verlag, 1978
Buku Teks
Starke, J.G.
Melbourne University Press, 1965
Buku Teks