APA (7th ed.) Citation

Le Queux, W. (2011). The Invasion. Project Gutenberg.

Chicago Style (17th ed.) Citation

Le Queux, William. The Invasion. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Le Queux, William. The Invasion. Project Gutenberg, 2011.

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