Duddy, M. (2010). The call of the north: A history of the Sisters of Mercy, Down and Connor Diocese, Ireland ; from the founding to the founding to the Mercy Irish National Union, 1854 - 1994. Ulster Historical Foundation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Duddy, Marie. The Call of the North: A History of the Sisters of Mercy, Down and Connor Diocese, Ireland ; from the Founding to the Founding to the Mercy Irish National Union, 1854 - 1994. Belfast: Ulster Historical Foundation, 2010.
Παραπομπή σε μορφή MLA (9th εκδ.)Duddy, Marie. The Call of the North: A History of the Sisters of Mercy, Down and Connor Diocese, Ireland ; from the Founding to the Founding to the Mercy Irish National Union, 1854 - 1994. Ulster Historical Foundation, 2010.
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