Bille-Hansen, A. C.; Holck, Harald, eds. (1894) [1st pub.:1801]. Statshaandbog for Kongeriget Danmark for Aaret 1881 [State Manual of the Kingdom of Denmark for the Year 1881] (PDF). Kongelig Dansk Hof- og Statskalender (in Danish). Copenhagen: J.H. Schultz A.-S. Universitetsbogtrykkeri. pp. 3–4. Retrieved 30 August 2021 – via da:DIS Danmark.
utpjournalsreview.com
James Stone, "Bismarck and the Containment of France, 1873–1877," Canadian Journal of History (1994) 29#2 pp 281–304 onlineArchived 14 December 2014 at the Wayback Machine
web.archive.org
James Stone, "Bismarck and the Containment of France, 1873–1877," Canadian Journal of History (1994) 29#2 pp 281–304 onlineArchived 14 December 2014 at the Wayback Machine
wikipedia.org
da.wikipedia.org
Bille-Hansen, A. C.; Holck, Harald, eds. (1894) [1st pub.:1801]. Statshaandbog for Kongeriget Danmark for Aaret 1881 [State Manual of the Kingdom of Denmark for the Year 1881] (PDF). Kongelig Dansk Hof- og Statskalender (in Danish). Copenhagen: J.H. Schultz A.-S. Universitetsbogtrykkeri. pp. 3–4. Retrieved 30 August 2021 – via da:DIS Danmark.