APA (7th ed.) Citation

Nennius, a. 7., & Giles, J. A. (2006). History of the Britons (Historia Brittonum). Project Gutenberg.

Chicago Style (17th ed.) Citation

Nennius, active 796, and J. A. Giles. History of the Britons (Historia Brittonum). Project Gutenberg, 2006.

MLA (9th ed.) Citation

Nennius, active 796, and J. A. Giles. History of the Britons (Historia Brittonum). Project Gutenberg, 2006.

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