Dupont, pp. 424–425. Dupont, Paul, ed. (1872). "Notes sur La Marine Et Les Ports Militaires de L'Italie" [Notes on the Navy and Military Ports of Italy]. La Revue Maritime et Coloniale [The Naval and Colonial Review] (in French). XXXII. Paris: Imprimerie Administrative de Paul Dupont: 415–430.
Ordovini, Petronio, & Sullivan, pp. 343–344. Ordovini, Aldo F.; Petronio, Fulvio & Sullivan, David M. (December 2014). "Capital Ships of the Royal Italian Navy, 1860–1918: Part I: The Formidabile, Principe di Carignano, Re d'Italia, Regina Maria Pia, Affondatore, Roma and Principe Amedeo Classes". Warship International. Vol. 51, no. 4. pp. 323–360. ISSN0043-0374.
Brassey 1886, p. 141. Brassey, Thomas, ed. (1886). "Evolutions of the Italian Navy, 1885". The Naval Annual. Portsmouth: J. Griffin & Co. OCLC896741963.
Garbett 1895, p. 89. Garbett, H., ed. (1895). "Naval and Military Notes". Journal of the Royal United Service Institution. XXXIX (203). London: J. J. Keliher & Co.: 81–110. OCLC8007941.
Brassey 1899, p. 72. Brassey, Thomas A., ed. (1899). "Chapter III: Comparative Strength". The Naval Annual. Portsmouth: J. Griffin & Co.: 70–81. OCLC896741963.