APA (7th ed.) Citation

Duffy, P. (2007). The killing of Major Denis Mahon: A mystery of old Ireland. HarperCollins.

Chicago Style (17th ed.) Citation

Duffy, Peter. The Killing of Major Denis Mahon: A Mystery of Old Ireland. New York: HarperCollins, 2007.

MLA (9th ed.) Citation

Duffy, Peter. The Killing of Major Denis Mahon: A Mystery of Old Ireland. HarperCollins, 2007.

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