That's from the FOUNDER of wiki.
But he said he has no sympathy for their plight, noting that he thinks to himself: “For God sake, you’re in college; don’t cite the encyclopedia.”
So, if you want some credibility, start using something else to back up your "knowledge."
Wikipedia is not considered a credible source. Wikipedia is increasingly used by people in the academic community, from freshman students to professors, as an easily accessible tertiary source for information about anything and everything. However, citation of Wikipedia in research papers may be considered unacceptable, because Wikipedia is not considered a credible or authoritative source.