http://www.medslugs.de/E/Med/Elysia_timida/Selection.htm
http://www.marenostrum.org/opistobranquios/etimida/etimida.htm
http://www.seaslugforum.net/showall/elystimi
http://www.nembro.info/uk_elysia_timida.html
http://www.nudipixel.net/species/elysia_timida/
http://sacoglossa.lifedesks.org/pages/34285
http://opistobranquis.info/en/guia/sacoglossa/elysia-timida/