APA (7th ed.) Citation

Beers, H. A. (2010). The Two Twilights. Project Gutenberg.

Chicago Style (17th ed.) Citation

Beers, Henry A. The Two Twilights. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Beers, Henry A. The Two Twilights. Project Gutenberg, 2010.

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