Henning, Friedrich-Wilhelm
Schöningh, 1973
Buku Teks
Neumann, Lothar F., author
Bundeszentrale fuur Politische Bildung, 1983
Buku Teks
Henning, Hansjoachim
Ferdinand Schoningh, 1977
Buku Teks
Pickel, Andreas
Westview Press, 1992
Buku Teks
Overy, R.J.
Oxford University Press , 1994
Buku Teks