APA (7th ed.) Citation

Freeman, E. A. (1990). William the conqueror. Project Gutenberg.

Chicago Style (17th ed.) Citation

Freeman, Edward A. William the Conqueror. Champaign, Ill: Project Gutenberg, 1990.

MLA (9th ed.) Citation

Freeman, Edward A. William the Conqueror. Project Gutenberg, 1990.

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