APA (7th ed.) Citation

Hart, P. (2005). The I.R.A. at war, 1916-1923. Oxford University Press.

Chicago Style (17th ed.) Citation

Hart, Peter. The I.R.A. at War, 1916-1923. Oxford: Oxford University Press, 2005.

MLA (9th ed.) Citation

Hart, Peter. The I.R.A. at War, 1916-1923. Oxford University Press, 2005.