- tiqets.com en/castle-of-cardona-tickets-l172375/
- miltonharispe.com info/spain/cardona/
- http://castleandpalacehotels.com countries/spain/spain_…
- barcelonaphotoblog.com 2007/01/castle-of-…
- tropki.com spain/catalonia/cardona/castle-of-…
- gezisituru.wordpress.com 2015/06/09/barcelona-…
- tr2tr.wiki wiki/Castle_of_Cardona
- fjalonso.blogspot.com 2013/03/catalonia-castle-of…
- planergo.com en/sights/castle-of-cardona/