Heeren, A. H. L., Talboys, D. A., Thom, A., & Thom, S. (1846). A manual of the history of the political system of Europe and its colonies: From its formation at the close of the fifteenth century, to its re-establishment upon the fall of Napoleon. H.G. Bohn.

Heeren, A. H. L., et al. A Manual of the History of the Political System of Europe and Its Colonies: From Its Formation at the Close of the Fifteenth Century, to Its Re-establishment upon the Fall of Napoleon. H.G. Bohn, 1846.