Here are a few of the questions to consider when deciding if a source is credible:
- Who is the author? Is the information provided about his or her credentials?
- Do you have any concerns about the author having a conflict of interest? Do you consider this person to be qualified for the purposes of your assignment?
- Where did the source come from? Was it published in a journal or book with editors and a review process?
- How current is the material?
- Does the author give evidence or support of arguments made? Does his or her research include citations?
The Purdue OWL provides more detail in its Evaluating Sources guide (link below).
