Scholz, Arno
Arani Verlags-Gmbh, 1961
Buku Teks
MacCloskey, Monro
Richards Rosen Press , 1967
Buku Teks
The Ministry of Foreign Affairs of the German Democratic Republic, 1961
Buku Teks
Deutscher Bundestag, 1981
Buku Teks
editor, Wolfgang Kruse
Press and Information Office of Land Berlin, 1979
Buku Teks