Onians, Richard Broxton, author
Cambridge University Press, 1994
Buku Teks
Toynbee, Arnold J., author
Meridian Books, 1958
Buku Teks
Major, J. Russel, author
J.B. Lippincott, 1966
Buku Teks
Reilly, Kevin, author
Harper and Row, c1980
Buku Teks
Carr, E.H. (Edward Hallet), author
Macmillan, 1946
Buku Teks