APA (7th ed.) Citation

O'Mahony, C. K. (2011). The Viceroys of Ireland. Project Gutenberg.

Chicago Style (17th ed.) Citation

O'Mahony, Charles Kingston. The Viceroys of Ireland. Project Gutenberg, 2011.

MLA (9th ed.) Citation

O'Mahony, Charles Kingston. The Viceroys of Ireland. Project Gutenberg, 2011.

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