Would I use it as a source for a paper? No. Why not? Ask yourself this. Is the person who’s writing this entry in Wikipedia an expert in his or her field. If you can’t say yes to that question I wouldn’t use it in a paper.
Personally, I think Wikipedia is fine if you want some background information for YOURSELF. If I need a refresher on the scientific method or string theory I’d use it. Would I use the Wikipedia entry on the scientific method for my paper on the history of science literacy? No, I’d look elsewhere.
When searching any catalogue or database enclose phrases in quotation marks.
Why? The default function in catalogues and databases is AND. If you do not put the phrase in quotes, the database will break your search up.
Let’s take our search, watershed assessment AND riparian buffer. If I don’t put those two phrases in quotes the databases will retrieve records containing: watershed AND assessment AND riparian AND buffer.