credible source 

Someone or something whose words, ideas, or notions are considered to be veritable and factual. Urban Dictionary is not one of these.

The idea that Urban Dictionary is a credible source is laughable, at best.

credible source by Stench Town November 2, 2006

Credible source 

Not urban dictionary

Urban dictionary is not a credible source.

Credible source by UltimateDoge May 21, 2021

credible sources 

is someone who is most likely an expert in the specific field which they are writing about. They have either spent a lot of time studying on, around, or in this field, as well as studying the works of other professionals.

This person would have left no stone unturned in their search for the most accurate information, and usually a great deal of respect from their peers and superiors. This is all very important, as it helps to provide that there is truth behind the information, and that it is fairly accurate and trustworthy as well. Which leads us to why it is necessary to use credible sources in our work. It will add strength and "weight" to our writing, allowing our readers some degree of comfort that what they the information contained within is correct.

credible sources by Sxy E May 8, 2009