APA (7th ed.) Citation

Pulitzer, R. (2013). Over the Front in an Aeroplane and Scenes Inside the French and Flemish Trenches. Project Gutenberg.

Chicago Style (17th ed.) Citation

Pulitzer, Ralph. Over the Front in an Aeroplane and Scenes Inside the French and Flemish Trenches. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Pulitzer, Ralph. Over the Front in an Aeroplane and Scenes Inside the French and Flemish Trenches. Project Gutenberg, 2013.

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