Παραπομπή σε μορφή APA (7η εκδ.)

Sim, D. (2013). A union forever: The Irish question and U.S. foreign relations in the Victorian age. Cornell University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Sim, David. A Union Forever: The Irish Question and U.S. Foreign Relations in the Victorian Age. Ithaca: Cornell University Press, 2013.

Παραπομπή σε μορφή MLA (9th εκδ.)

Sim, David. A Union Forever: The Irish Question and U.S. Foreign Relations in the Victorian Age. Cornell University Press, 2013.