Veken, K. (1962). Der Kellerschlüssel. Kinderbuchverlag.
Chicago Style (17th ed.) CitationVeken, Karl. Der Kellerschlüssel. Berlin: Kinderbuchverlag, 1962.
MLA (8th ed.) CitationVeken, Karl. Der Kellerschlüssel. Kinderbuchverlag, 1962.
Warning: These citations may not always be 100% accurate.