APA (7th ed.) Citation

O'Neill, J. H. (1984). George Villiers, Second Duke of Buckingham. Twayne Publishers.

Chicago Style (17th ed.) Citation

O'Neill, John H. George Villiers, Second Duke of Buckingham. Boston: Twayne Publishers, 1984.

MLA (9th ed.) Citation

O'Neill, John H. George Villiers, Second Duke of Buckingham. Twayne Publishers, 1984.

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