APA (7th ed.) Citation

O'Connor, E. (2003). Communists, Russia, and the IRA: 1920 - 1923. The historical journal.

Chicago Style (17th ed.) Citation

O'Connor, Emmet. "Communists, Russia, and the IRA: 1920 - 1923." The Historical Journal 2003.

MLA (8th ed.) Citation

O'Connor, Emmet. "Communists, Russia, and the IRA: 1920 - 1923." The Historical Journal, 2003.

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