APA (7th ed.) Citation

London, J., & Magnus, E. (1930). Lockruf des Goldes. Büchergilde Gutenberg.

Chicago Style (17th ed.) Citation

London, Jack, and Erwin Magnus. Lockruf Des Goldes. Berlin: Büchergilde Gutenberg, 1930.

MLA (9th ed.) Citation

London, Jack, and Erwin Magnus. Lockruf Des Goldes. Büchergilde Gutenberg, 1930.

Warning: These citations may not always be 100% accurate.