Rosa Luxemburg
http://web.infinito.it/utenti/c/communism/classici/luxemburg.htm
http://www.marxists.org/italiano/luxembur/index.htm
http://www.marxists.org/xlang/luxembur.htm
http://www.marxists.org/archive/luxemburg/index.htm
http://www.zmag.org/Italy/rich-marx-luxemburg.htm