APA (7th ed.) Citation

Borkenau, F. (1939). The new German Empire. Penguin Books.

Chicago Style (17th ed.) Citation

Borkenau, Franz. The New German Empire. Harmondsworth: Penguin Books, 1939.

MLA (9th ed.) Citation

Borkenau, Franz. The New German Empire. Penguin Books, 1939.

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