References
Heinrich von Treitschke
Metz, K. H. (2005). Historiography as political activity: Heinrich von Treitschke and the historical reconstruction of politics. In P. Koslowski (Ed.). The discovery of historicity in German idealism and historism (pp. 98-111). Dordrecht: Springer.
Leichter, K. (1934). Heinrich von Treitschkes und Bismarcks Systeme der Sozialpolitik. Zeitschrift für Sozialforschung, 3 (2), 292-295. https://doi.org/10.5840/zfs193432106.