APA (7th ed.) Citation

Longford, F. P. (1974). Abraham Lincoln. Weidenfeld & Nicolson.

Chicago Style (17th ed.) Citation

Longford, Frank Pakenham. Abraham Lincoln. London: Weidenfeld & Nicolson, 1974.

MLA (9th ed.) Citation

Longford, Frank Pakenham. Abraham Lincoln. Weidenfeld & Nicolson, 1974.

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