Sevaldsen, Jørgen. “J. R. Hay: The Origins of the Liberal Welfare Reforms 1906-1914. Studies in Economic and Social History, Ed. M. W. Flinn. MacMillan, London, 1975. 78 S”. Historisk Tidsskrift, bd. 13, januar 1976, https://tidsskrift.dk/historisktidsskrift/article/view/51710.