Carr, E.H. (Edward Hallet), author
Harver Torchbooks, 1947
Buku Teks
Lanyi, George A.
Random House , 1966
Buku Teks
Crocker, Walter R. (Walter Russell), 1902-, author
Melbourne University Press, 1971
Buku Teks
John Baylis, Steve Smith, Patricia Owens.
Oxford University Press, 2014
Buku Teks
Buzan, Barry, author
Cambridge University Press , 2015
Buku Teks