↑ James Bryce (1838-1922), Holy Roman Empire, London, 1865.
↑ James Sheehan, German History 1770-1866, Oxford, Oxford University Press, 1989. Introduction, pp. 1-8.
Braun, B.: Reichsunmittelbarkeit in German, French and Italian in the online Historical Dictionary of Switzerland. Version of 2005-05-03. URL last accessed 2006-11-29.
Bryce, James (1838-1922), Holy Roman Empire, London, 1865.
Sheehan, James, German History 1770-1866, Oxford, Oxford University Press, 1989.
