APA (7th ed.) Citation

Chesterton, G. K. (1977). Das unlösbare Problem. Das Neue Berlin.

Chicago Style (17th ed.) Citation

Chesterton, Gilbert Keith. Das Unlösbare Problem. Berlin: Das Neue Berlin, 1977.

MLA (8th ed.) Citation

Chesterton, Gilbert Keith. Das Unlösbare Problem. Das Neue Berlin, 1977.