There isn't a checklist that decides if a source of information is credible, trustworthy, and/or appropriate for the assignment. Start by asking questions to determine if a source will fit your needs. Keep in mind that the information needs to be situated in the context of the research topic or question.
- How will you use this source in your research assignment?
- What value does this source add to your research assignment?
- Does the information relate to your research topic and/or answer some aspect of your research question?