Help for research paper?

I’m writing a final paper for a class on generalized anxiety disorder. I need information (specifically research articles from academic journals) on how to diagnose the disorder. Does anyone have any ideas on where I could find info about diagnostic/assessment tools and instruments for diagnosing this disorder? Thank you!
Sorry, I meant to say if anyone had any suggestions on where I could go online to find more information. Sorry for not being clear on that!

You need peer reviewed journals. Go to www.pubmed.gov or you can also go to pubmedcentral. You might have to view the site on your college campus as pubmed journals are not free for viewing. Your college will have a subscription to selected journals. Pubmedcentral is free, but it won’t provide a full literature review.

Insidermedicine In Depth – August 3, 2010 – Internet, Depression Linked

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