APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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