I would suggest to ignore ABS's Academic Journal Guide (AJG). ABS has recently published a 2018 version of the AJG. I have analyzed it in the following blog post and came to the conclusion that it does not reflect the quality of journals in my discipline at all (JCR impact factors seems to be more reliable, but also be careful with such metrics): https://scmresearch.org/2018/03/14/ranking-journals-academic-journal-guide-2018-abs-list/

Take a look at Journal Citation Reports in the Web of Science 

http://apps.webofknowledge.com/

I think you need a subscription to be able to access it

Thomson Reuters, Scimago Journal & Country Rank (http://www.scimagojr.com)  and cite factor (http://www.citefactor.org/) are among few websites for most trusted and reliable source for impact factor assessment

Thank you all

I would suggest to ignore ABS's Academic Journal Guide (AJG). ABS has recently published a 2018 version of the AJG. I have analyzed it in the following blog post and came to the conclusion that it does not reflect the quality of journals in my discipline at all (JCR impact factors seems to be more reliable, but also be careful with such metrics): https://scmresearch.org/2018/03/14/ranking-journals-academic-journal-guide-2018-abs-list/

Thank you Mansour Abdullah Alshehri Most universities usually rely on the JCR.

I would suggest to rely on Clarivate JCR.

Documents regarding 2020 Journal Citation Reports you can find in this post: https://www.researchgate.net/post/2020_Journal_Citation_Reports