APA (7th ed.) Citation

Paul, O. (1942). Underground Europe calling. Gollancz.

Chicago Style (17th ed.) Citation

Paul, Oscar. Underground Europe Calling. London: Gollancz, 1942.

MLA (8th ed.) Citation

Paul, Oscar. Underground Europe Calling. Gollancz, 1942.

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