Tài liệu tham khảo WikiPedia: Noguera_(comarca) http://www.idescat.es/servlet/BasicTerr?TC=3&V0=2&... http://noguera.ddl.net/ //tools.wmflabs.org/geohack/geohack.php?language=v... https://commons.wikimedia.org/wiki/Category:Noguer...