Gaya APA
Karfeld, K. (1956).
Germany in colour, text by W.Dirks and M.Hausmann, edition Eastern and Western Germany. .
Düsseldorf:
Karfeld.
Gaya MLA
Karfeld, K.P..
"Germany in colour, text by W.Dirks and M.Hausmann, edition Eastern and Western Germany. ".
Düsseldorf:
Karfeld,
1956.
Buku.