APA (7th ed.) Citation

(1920). What I saw in Germany (letters from Germany and Austria). London.

Chicago Style (17th ed.) Citation

What I Saw in Germany (letters from Germany and Austria). London, 1920.

MLA (8th ed.) Citation

What I Saw in Germany (letters from Germany and Austria). London, 1920.

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