This document discusses how to evaluate the credibility of information sources. It outlines several principles for verifying sources, including verification, objectivity, and transparency. When evaluating sources, one should consider the purpose, accuracy, authority, relevance, and currency of the information using the PAARC method. Wikipedia can contain biases and errors, so it's best to cite sources it links to rather than Wikipedia itself. The document also discusses types of websites based on their top-level domains and warns about misinformation and predatory sources. It emphasizes scrutinizing sources, corroborating information, and properly acknowledging sources to avoid plagiarism.