Lanyi, George A.
Random House , 1966
Buku Teks
McWilliams, Wayne C., author
Adamantine Press, 1990
Buku Teks
edited by John Baylis and Steve Smith
Oxford University Press, 2006
Buku Teks
John Baylis, Steve Smith, Patricia Owens.
Oxford University Press, 2014
Buku Teks
Carr, E.H. (Edward Hallet), author
Harver Torchbooks, 1947
Buku Teks