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Maume, Patrick (1999). "Young Ireland, Arthur Griffith, and Republican Ideology: the Question of Continuity". Éire-Ireland. XXXIV:2 (2): (155–174) 170. doi:10.1353/eir.1999.0008. S2CID149094348.
Boyle, J. W. (1971). "A Fenian Protestant in Canada: Robert Lindsay Crawford 1910-1922". Canadian Historical Review. LVII (2): 165–176. doi:10.3138/CHR-052-02-03. S2CID162210866.
Coakley, John (September 2005). "Ireland's Unique Electoral Experiment: The Senate Election of 1925". Irish Political Studies. 20 (3): 231–269. doi:10.1080/07907180500359327. S2CID145175747.
"New Decade, New Approach"(PDF). assets.publishing.service.gov.uk. January 2020. pp. 15–16. Archived(PDF) from the original on 10 January 2020. Retrieved 25 April 2020.