Leisner, Johny. “Nicholas Mansergh: The Irish Question, 1840-1921. New and Revised Edn. London, George Allen & Unwin, 1965. 316 Sider. 42 Sh”. Historisk Tidsskrift, bd. 12, januar 1967, https://tidsskrift.dk/historisktidsskrift/article/view/50692.