Kahler, Hans, 1912-, author
Verlag von Dietrich Reimer, 1963
Buku Teks
Berlin : Frankfurt Ullstein, 1990
Buku Teks
Savigny, Eike von
Karl Alber Freiburg , 1969
Buku Teks
Frank, Alfons
Buchners, 1963
Buku Teks
Wilpert, Gero von, author
Alfred Kroner , 1964
Buku Referensi