What is the IEEE citation style for content obtained from wikipedia? I have added a paragraph from wikipedia in my thesis. Now I need to add reference to that wikipedia page. What is the IEEE formatting and citation style for that? Currently I use as below.

In chapter of thesis added copied content from wikipedia as below


  The waterfall development model originates in the manufacturing and construction
  industries; highly structured physical environments in which after-the-fact changes are
  prohibitively costly, if not impossible. Since no formal software development
  methodologies existed at the time, this hardware-oriented model was simply adapted
  for software development [1].


In References page


  [1] (2014, April 22). Waterfall Model [Online]. Available:
  http://en.wikipedia.org/wiki/Waterfall_model
For correct citation of Wikipedia, see Wikipedia's guide to citing Wikipedia.  Since you are using IEEE styles, you should probably be using BibTeX to manage your citation, in which case you can directly use the BibTeX formatting template provided.