^William Fortescue (2002).The Third Republic in France 1870-1940: Conflicts and Continuities. Routledge. p. 99.ISBN1134740220.
^Howe, Patricia (2010). "Appropriation and Alienation: Women Travellers and the Construction of Identity". In Gifford, Paul; Hauswedell, Tessa (eds.).Europe and Its Others: Essays on Interperception and Identity. Oxford: Peter Lang. p. 78.ISBN978-3-03911-968-4.