APA (7th ed.) Citation

Lethaby, W. R. (2012). London Before the Conquest. Project Gutenberg.

Chicago Style (17th ed.) Citation

Lethaby, W. R. London Before the Conquest. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Lethaby, W. R. London Before the Conquest. Project Gutenberg, 2012.

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