Each and every journals has IMPACT FACTOR but those impact factor have been given by any one of the below impact factor evaluation websites

1)SCIENCE CITATION INDEX : http://www.scijournal.org/

2)Scientific Journal Impact Factor : http://sjifactor.com/

3)Universal Impact Factor : http://uifactor.org/

4)Journal Impact Factor : http://www.jifactor.com/

5)Global Impact Factor : http://globalimpactfactor.com/

6)Cite Factor : http://www.citefactor.org/journal-impact-factor-list-2014.html

and so on......

Then, why do we need all such impact factors? 

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