"Ganaderia" [Livestock]. Gran Enciclopedia Aragonesa (in Spanish). 29 September 2007. Archived from the original on 29 September 2007. Retrieved 7 April 2014.
"Ganaderia" [Livestock]. Gran Enciclopedia Aragonesa (in Spanish). 29 September 2007. Archived from the original on 29 September 2007. Retrieved 7 April 2014.
Bulletin of the association, with a description of its history.