Research the author. Search the Internet for information on his expertise and qualifications. Consider how often he is cited in other academic works you find during your research.
Choose articles and books published by reputable publishers. Academic journals, university publishing houses and specialized magazines and newspapers publish expert and credible material. Academic theses and government reports also provide credible information.
Use material written for an academic audience. Avoid general reading material for a nonexpert audience.
Ensure your research material is objective. Avoid subjective, unprofessional material, or material written with a nonacademic motive.
Avoid controversial or contested information and opinions. Use material that provides all sides of the argument, or research the academic debates surrounding the information.
Check the publication date of the information. If the publication is particularly old, ensure the information is still relevant. New research and studies may have made old information redundant.