APA (7th ed.) Citation

O'Brien, D. (1949). History of the O'Briens from Brian Boroimhe, AD.1000 to AD.1945. Batsford.

Chicago Style (17th ed.) Citation

O'Brien, Donough. History of the O'Briens from Brian Boroimhe, AD.1000 to AD.1945. Lond.: Batsford, 1949.

MLA (8th ed.) Citation

O'Brien, Donough. History of the O'Briens from Brian Boroimhe, AD.1000 to AD.1945. Batsford, 1949.

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