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When you encounter any kind of source, consider:
For background information, start in Google but DON'T stay there. Searching in Google Scholar you may get full text articles but sometimes it requires a subscription. Google Scholar only searches a fraction of the published scholarly literature.
The library database, Credo Reference Online, will search several of our databases and catalog simultaneously. Do not use Credo Reference for in-depth research. Credo is our academic Google!