APA (7th ed.) Citation

Douglas, R., Harte, L., & O'Hara, J. (2000). Ireland since 1690: A concise history. Contemporary Books.

Chicago Style (17th ed.) Citation

Douglas, Roy, Liam Harte, and Jim O'Hara. Ireland Since 1690: A Concise History. Lincolnwood, Ill.: Contemporary Books, 2000.

MLA (9th ed.) Citation

Douglas, Roy, et al. Ireland Since 1690: A Concise History. Contemporary Books, 2000.