APA (7th ed.) Citation

O'Brien, M., & O'Brien, C. C. (1972). A concise history of Ireland / by M. O'Brien and C.C. O'Brien. Thames and Hudson.

Chicago Style (17th ed.) Citation

O'Brien, M., and Conor Cruise O'Brien. A Concise History of Ireland / by M. O'Brien and C.C. O'Brien. Thames and Hudson, 1972.

MLA (9th ed.) Citation

O'Brien, M., and Conor Cruise O'Brien. A Concise History of Ireland / by M. O'Brien and C.C. O'Brien. Thames and Hudson, 1972.

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