To critically analyze sources of information for UPSC, candidates can employ several key strategies. First, assess the credibility of the source by verifying the author's qualifications and expertise. Check for bias by analyzing the content for subjective language or unsupported claims. Cross-referencing information with other reliable sources can help confirm its accuracy. Additionally, evaluating the date of publication ensures that the information is current. Implementing these strategies allows candidates to distinguish between fact and opinion, which is crucial for formulating well-informed responses in UPSC exams.