APA (7th ed.) Citation

Orpen, W. An Onlooker in France 1917-1919.

Chicago Style (17th ed.) Citation

Orpen, William. An Onlooker in France 1917-1919.

MLA (9th ed.) Citation

Orpen, William. An Onlooker in France 1917-1919.

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