1. Block, Maurice. 1872. Les Théoriciens du Socialisme en Allemagne. Journal des Economistes 27 (79): 5–39.
2. Cairnes, John E. 1874. Some Leading Principles of Political Economy. London: Macmillan.
3. Cardoso, José L., and Michalis Psalidopoulos. 2016. The German Historical School and the European Economic Thought. London and New York: Routledge.
4. Edgeworth, Francis Y. 1881. Mathematical Psychics. An Essay on the Application of Mathematics to the Moral Sciences. London: G. Kegan Paul.
5. Hildebrand, Bruno. 1848. Die Nationalökonomie der Gegenwart und Zukunft. Frankfurt am Main: J. Rütten.