<p>RefSeek is still in public beta, but I’ve had a lot of luck with this search engine. RefSeek gives students access to more than 1 billion documents, web pages, books, journals, and newspapers. What I really appreciate about the site is how clean the interface is—no ads, sponsored links or commercial results appear when you use RefSeek.</p><p>For a full review visit: http://eoinlong.com/</p>