APA (7th ed.) Citation

Hoffmann, L. (2012). Hoyle's Games Modernized. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hoffmann, Louis. Hoyle's Games Modernized. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Hoffmann, Louis. Hoyle's Games Modernized. Project Gutenberg, 2012.

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