APA (7th ed.) Citation

Walpole, H. (2006). The Dark Forest. Project Gutenberg.

Chicago Style (17th ed.) Citation

Walpole, Hugh. The Dark Forest. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Walpole, Hugh. The Dark Forest. Project Gutenberg, 2006.

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