Cita APA (7th ed.)

De Paor, L. (1971). Divided Ulster (2nd ed.). Penguin.

Cita Chicago (17th ed.)

De Paor, Liam. Divided Ulster. 2nd ed. Harmondsworth: Penguin, 1971.

Cita MLA (8th ed.)

De Paor, Liam. Divided Ulster. 2nd ed. Penguin, 1971.