APA (7th ed.) Citation

O'Farrell, M. (2009). 50 things you didn't know about 1916. Mercier.

Chicago Style (17th ed.) Citation

O'Farrell, Mick. 50 Things You Didn't Know About 1916. Cork: Mercier, 2009.

MLA (9th ed.) Citation

O'Farrell, Mick. 50 Things You Didn't Know About 1916. Mercier, 2009.

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