APA (7th ed.) Citation

O'Brien, B. (1997). A pocket history of the IRA. O'Brien Press.

Chicago Style (17th ed.) Citation

O'Brien, Brendan. A Pocket History of the IRA. Dublin: O'Brien Press, 1997.

MLA (9th ed.) Citation

O'Brien, Brendan. A Pocket History of the IRA. O'Brien Press, 1997.

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