Boston : Beacon Press, 1959

Cambridge [England] : University Press, 1966

[Athens] : Ohio University Press, 1978

London ; New York : Addison Wesley Longman, 1998

Edinburgh, T. Nelson 1960

Lewiston, N.Y. : Edwin Mellen Press, 2000

Boston : Little, Brown, 1983
1st ed.

Boston : Beacon Press, 1962

New York, Funk & Wagnalls 1967
Rev. ed.

Chicago : University of Chicago Press, 1988

London ; New York : Arnold : Distributed in the USA by St. Martin's Press, 1997

Cambridge, London, Cambridge U.P., 1968

New York : Oxford University Press, 1971

St. Louis, MO : [Distributed by] the Phoenix Learning Group, 2008

New York : Viking Press, 1946

New York : Oxford University Press, 1991

Princeton, N.J., Princeton University Press, 1961

Cambridge [England] : New York : Speculum Historiale ; Barnes & Noble, 1966

Cambridge [England] : University Press, 1965

Chicago : University of Chicago Press, 1974