Cloonan, W. J. Frères ennemis. Oxford University Press.
Cita Chicago (17th ed.)Cloonan, William J. Frères Ennemis. Oxford University Press.
Cita MLA (8th ed.)Cloonan, William J. Frères Ennemis. Oxford University Press.
Atenció: Aquestes cites poden no estar 100% correctes.