Consider these criteria to determine if your sources are reputable:
Author: Who produced the information? What can you find about the author’s credentials?
Accuracy: Does the author cite references to support his/her thesis? Are the references also from scholarly and credible sources? How does the information compare to other sources you have found?
Timeframe: When was the source published? Is the information still relevant?
For more tips and guidelines, see:
- Evaluating Web Pages: Techniques to Apply & Questions to Ask (UC Berkeley Libraries)
- Evaluating Print vs. Internet Sources (Purdue University Online Writing Lab)