http://www.soberaniaalimentaria.info/
https://spgmurcia.wordpress.com/
https://spgecovalle.wordpress.com/
http://agroicultura.com/general/ecollaures-spg/
https://www.oruralquerexente.net/index.php/es/
http://www.ifoam.bio/en/pgs-publications-spanish
http://www.red-accion.eu