APA (7th ed.) Citation

Marsh, R. (2012). The Twickenham Peerage. Project Gutenberg.

Chicago Style (17th ed.) Citation

Marsh, Richard. The Twickenham Peerage. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Marsh, Richard. The Twickenham Peerage. Project Gutenberg, 2012.

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