How to properly cite a website

This is how to properly cite a source that you find on the internet

Revkin, A. The New York Times. September 30, 2011 (updated).Retrieved November 8, 2011 from
 The New York Times: Global Warming.

Wales, J. Wikipedia. November 9, 2001. Retrieved November 9, 2011 from
 Pollution (Wikipedia).

Marine species threatened by pollution,Climate Change. Caribbean News Now!. Retrieved November 9, 2011 from  Caribbean News Now!