Sofka, J. R. (2011). Metternich, Jefferson and the Enlightenment: Statecraft and political theory in the early nineteenth century. Consejo Superior de Investigaciones Científicas.

Sofka, James R. Metternich, Jefferson and the Enlightenment: Statecraft and Political Theory in the Early Nineteenth Century. Madrid: Consejo Superior de Investigaciones Científicas, 2011.

Sofka, James R. Metternich, Jefferson and the Enlightenment: Statecraft and Political Theory in the Early Nineteenth Century. Consejo Superior de Investigaciones Científicas, 2011.