Wetzel, D. (2012). A duel of nations: Germany, France, and the diplomacy of the War of 1870-1871. University of Wisconsin Press.

Wetzel, David. A Duel of Nations: Germany, France, and the Diplomacy of the War of 1870-1871. Madison: University of Wisconsin Press, 2012.

Wetzel, David. A Duel of Nations: Germany, France, and the Diplomacy of the War of 1870-1871. University of Wisconsin Press, 2012.