"Wikipedia is a much better source than YouTube! At least they reference all their citations."
Though it must be noted that the few times I have looked at a source quoted from wikipedia, then looked at the reference the reference quotes from a article that quotes from another article. Extremely poor.
I have even been silly enough to go back three articles and still could not see any backing or relevance to the mentioned statement.
Any way it is a good place to start, then look at the references to see the validity of the statement. Better to quote the reference than the article. [gee and I charge for that info :-) ]