Notes from Wikiquote
Count L. P. de Ségur, Histoire de Frédéric-Guillaume II (Paris, 1800); Süd-Preussischen Zeitung (25 October 1794); V. Amédée Renée’s tr. of Cesare Cantu’s Storia di cento anni—Histoire de cent ans (Paris, 1852), vol. 1, p. 419n; W. F. H. King, Classical and Foreign Quotations, 3rd ed. (1904), no. 804