Peer-Reviewed Journal Articles
You can use the following databases to locate peer-reviewed journal articles:

Newspaper Articles

You can use the following databases to locate newspaper articles:

Gray Literature

Search tips for finding gray literature:

• Search the websites of corporations, institutions, or agencies that produce the kinds of literature you're looking for
• Try a site:gov search in Google
  • For example, if you're looking for government reports about Arctic National Wildlife Refuge, type Arctic National Wildlife Refuge Report:gov, as this will instruct Google to search for only domain names ending in .gov

Examples of sites and resources containing gray literature include:

Government and Legal Publications