Veken, K. (1974). Der Kellerschlüssel. Kinderbuchverlag.
Chicago Style (17th ed.) CitationVeken, Karl. Der Kellerschlüssel. Berlin: Kinderbuchverlag, 1974.
MLA (8th ed.) CitationVeken, Karl. Der Kellerschlüssel. Kinderbuchverlag, 1974.
Warning: These citations may not always be 100% accurate.