*Phylum Annelida : http://www.mun.ca/biology/scarr/Annelida.htm (2005-25-11)
*Annelida : http://www.zoologie-online.de/Galerie/Bilder-Zoologie/Annelida/annelida.html (2005-11-25)
*Untitled : http://www.biology.ucok.edu/AnimalBiology/Annelida/Annelida.html (2005-11-25)
*Annelida : http://www.ldeo.columbia.edu/edu/dees/ees/life/slides/phyla/annelida.html (2005-11-25)
*Segmented worms (Annelida) : http://www.seawater.no/fauna/Leddormer/ (2005-11-25)
*Marine Invertebrate Photos : http://dnr.metrokc.gov/wlr/waterres/marine/img/annelida/icky_worm.htm (2005-11-25)
*Chaetopterus variopedatus-Annelida-BY255L Invertebrate Zoology :
http://www.dpo.uab.edu/~acnnnghm/BY255L/BY255L-Annelida-Chaetopterusvariopedatus-1.htm (2005-11-25)
*Annelida - Wikipedia, the free encyclopedia : http://en.wikipedia.org/wiki/Annelida (2005-11-26)
*Bioweb - kmeň Obrúčkavce : http://www.biowebgym.szm.sk/zivocichy/p_obruckavce.htm (2005-11-26)
*Miscellanous Invertebrates : http://popgen0146uns50.unimaas.nl/~jlindsey/commanster/Invertebrates/Misc/invertebrates.html (2005-11-26)
*Amy Stewart Press Information : http://www.amystewart.com/info.htm (2005-11-26)
*La Snaguisuga, Hirudo medicinalis : http://www.ittiofauna.org/webmuseum/invertebrati/anellidi/index_big.htm (2005-11-26)
*MondoMarino.net : http://www.mondomarino.net/ricerca/index.asp?p=2&view=ico&f=10&cat=16 (2005-11-26)