APA (7th ed.) Citation

Haffner, S. (1940). Germany - Jekyll and Hyde. Secker and Warburg.

Chicago Style (17th ed.) Citation

Haffner, Sebastian. Germany - Jekyll and Hyde. London: Secker and Warburg, 1940.

MLA (8th ed.) Citation

Haffner, Sebastian. Germany - Jekyll and Hyde. Secker and Warburg, 1940.