http://www.medslugs.de/E/Med/Berthella_aurantiaca/Selection.htm
http://www.wttfw.freesurf.fr/biology/biology_liste.php?langue=uk&action=classif#Opistobranchia
http://www.ugr.es/~lstocino/bertthella_aurantiaca.htm
http://www.marenostrum.org/opistobranquios/baurantiaca/index.htm
http://digilander.iol.it/netofotosub/Pagine/bert.htm
http://www.nudipixel.net/species/berthella_aurantiaca/
http://opistobranquis.info/en/guia/pleurobranchomorpha/berthella-aurantiaca/