APA (7th ed.) Citation

Longford, F. P., & MacHardy, A. (1981). Ulster. Weidenfeld and Nicolson.

Chicago Style (17th ed.) Citation

Longford, Frank Pakenham, and Anne MacHardy. Ulster. London: Weidenfeld and Nicolson, 1981.

MLA (8th ed.) Citation

Longford, Frank Pakenham, and Anne MacHardy. Ulster. Weidenfeld and Nicolson, 1981.

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