Bianca Maria Sforza : diforc'h etre ar stummoù

* {{en}} [http://www.aeiou.at/aeiou.encyclop.b/b434322.htm;internal&action=_setlanguage.action?LANGUAGE=en Bianca Maria Sforza] en ''[[aeiou Encyclopedia]]'']

* {{en}} [https://www.nga.gov/collection/art-object-page.1192.html Poltred Bianca Maria Sforza en [[''National Gallery]] [http://www.nga.gov/cgi-bin/pinfo?Object=1195+0+noneof Art''] .