Herr, Cheryl (1994): «Terrorist Chic: Style and Domination in Contemporary Ireland» i: Benstock, Shari; Ferriss, Suzanne: . New Brunswick, N.J.: Rutgers University Press. ss. 235–266. ISBN 0813520339. Selzer, Michael (1979): . New York: Hawthorn Books. ISBN 0801575346.