Allan Mitchell, The Divided Path: The German Influence on Social Reform in France After 1870 (1991) onlineდაარქივებული 2019-04-14 საიტზე Wayback Machine.
Allan Mitchell, The Divided Path: The German Influence on Social Reform in France After 1870 (1991) onlineდაარქივებული 2019-04-14 საიტზე Wayback Machine.