Hoffmann, S., & Kollmeier, K. (2012). 'Geschichtliche Grundbegriffe' Reloaded?: Writing the conceptual history of the Twentieth Century : introduction / Stefan-Ludwig Hoffmann. Kathrin Kollmeier. Contributions to the history of concepts.
Chicago-referens (17:e uppl.)Hoffmann, Stefan-Ludwig, och Kathrin Kollmeier. "'Geschichtliche Grundbegriffe' Reloaded?: Writing the Conceptual History of the Twentieth Century : Introduction / Stefan-Ludwig Hoffmann. Kathrin Kollmeier." Contributions to the History of Concepts 2012.
MLA-referens (8:e uppl.)Hoffmann, Stefan-Ludwig, och Kathrin Kollmeier. "'Geschichtliche Grundbegriffe' Reloaded?: Writing the Conceptual History of the Twentieth Century : Introduction / Stefan-Ludwig Hoffmann. Kathrin Kollmeier." Contributions to the History of Concepts, 2012.