Tài liệu Qormi

  • W&R Chambers Limited and Cambridge University Press, Chambers World Gazetteer: an A-Z of Geographical Information, 5th edition, 1988, page 528
  • Barry Turner (ed.), The Statesman's Yearbook: The Politics, Cultures and Economies of the World 2005, Palgrave Macmillan, page 1113