A credible website, by definition, is one you can trust to present the facts in an unbiased manner.
A non-credible website is one you can't trust.
Explan a credible and a non cedible websites.
2 answers
Check the links in these answers.
http://www.jiskha.com/display.cgi?id=1307478404
http://www.jiskha.com/display.cgi?id=1307478404