Foster, George M., author
Little, Brown, 1967
Buku Teks
Barraclough, Geoffrey, 1908-1984
Basil Blackwell, 1957
Buku Teks
Wilson, Bryan, author
I.B. Tauris , 2008
Buku Teks
William I. Hitchcock, Melvyn P. Leffler, Jeffrey W. Legro.
Massachusetts Harvard University Press, 2016
Buku Teks
Dodds, Klaus
Prentice-Hall, 2000
Buku Teks