APA (7th ed.) Citation

O'Halpin, E. (1999). Defending Ireland : the Irish state and its enemies since 1922 / Eunan O'Halpin: The Irish state and its enemies since 1922. Oxford University Press.

Chicago Style (17th ed.) Citation

O'Halpin, Eunan. Defending Ireland : The Irish State and Its Enemies Since 1922 / Eunan O'Halpin: The Irish State and Its Enemies Since 1922. Oxford: Oxford University Press, 1999.

MLA (9th ed.) Citation

O'Halpin, Eunan. Defending Ireland : The Irish State and Its Enemies Since 1922 / Eunan O'Halpin: The Irish State and Its Enemies Since 1922. Oxford University Press, 1999.

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