- http://www.encyclopedia.com/topic/Nematoda.aspx] by [Yeh, Jennifer] on [2002]
- http://www.mcwdn.org/Animals/Roundworms.html] by [Mr Gordon Ramel] on [2002]
- http://plpnemweb.ucdavis.edu/nemaplex/Taxadata/Desmoida.htm [encyvlopidia of life] [2014]
- structure pic. retrieved from [http://www.biologycorner.com/worksheets/dragonfly/27-2_roundworms.html] by [Dragonfly] on [2-27]
- http://www.cbv.ns.ca/mchs/diversity/NEMATODA.HTM] by [cbv] on [2003]
- http://nematode.unl.edu/wormgen.htm] by [University of Nebraska] on [2000]
- structure pic. representing both male and female [http://nervoussystemphylum.weebly.com/nematoda.html] by [weebly] on [2004]
- http://www.earthlife.net/inverts/nematoda.html] by [Mr. Gordon Ramel] on [2013]
- http://www.medicinenet.com/trichinosis/page5.htm#what_are_the_risk_factors_for_getting_trichinosis] by [MedicineNet Inc.] updated from [1996-2015]
- http://global.oup.com/us/companion.websites/9780195326949/student_resources/facts/] by [custserve.us] on 2015
- Remaining pics. retrieved from [http://nervoussystemphylum.weebly.com/nematoda.html] by [weebly] retrieved on
- 5/20/15]http://en.wikipedia.org/wiki/Enoplida] modified on [18 April,2015] by [wikipedia]