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2. Arena, V. (2012). Libertas and the practice of politics in the late Roman Republic. Cambridge University Press.
3. Barros, A. R. G. d. (2018). Republicanismo inglês: Sidney e a semântica da liberdade. Discurso Editorial.
4. Bibliothèque publique et universitaire de Neuchâtel. Manuscrpit R.18. entitled: “Recueil A contenant des citations, des fragments et brouillons de lettres, etc.”: Jean-Jacques Rousseau’s notes on Discourses.
5. British Library. Add MS 44729, fols. 19–20: William Gladstone’s notes on Discourses.