Try these search engines to find more academic sources:
For suggested websites, consult this guide with links to a variety of sites across a wide range of subject areas that are freely available on the open web, see: Internet Resource Libguide
See below for help in analyzing the validity and credibility of websites on the open web.
"The information found on the World Wide Web has added a new dimension to selecting resources. Anyone can create a Web site. No one has evaluated the quality or accuracy of the information found on the Web before you come across it." (Teaching and Learning Services, The University of Maryland)
The University of Maryland has an excellent and short guide on Web Site Evaluation. It includes a helpful checklist.
Click on the link below to open the GoogleDoc. To allow for editing, look under your File menu and select "Make a copy." Answer the questions, print and attach to your research assignment.