APA (7th ed.) Citation

Childe, G. (1943). What Happened in History (2. Aufl.). Penguin.

Chicago Style (17th ed.) Citation

Childe, Gordon. What Happened in History. 2. Aufl. Harmondsworth: Penguin, 1943.

MLA (8th ed.) Citation

Childe, Gordon. What Happened in History. 2. Aufl. Penguin, 1943.

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