APA (7th ed.) Citation

O'Brien, J., & Harbison, P. (1996). Ancient Ireland: From prehistory to the Middle Ages. Oxford University Press.

Chicago Style (17th ed.) Citation

O'Brien, Jacqueline, and Peter Harbison. Ancient Ireland: From Prehistory to the Middle Ages. New York: Oxford University Press, 1996.

MLA (9th ed.) Citation

O'Brien, Jacqueline, and Peter Harbison. Ancient Ireland: From Prehistory to the Middle Ages. Oxford University Press, 1996.