This document provides a checklist for evaluating information sources. It outlines key questions to consider about the who, what, when, where, why, and how of a source to determine credibility, including who the target audience and author are, the writing style, how current the information is, where facts are obtained from, why the source exists, and how relevant it is to the subject. The purpose is to help users critically analyze sources and avoid biased or inaccurate information when conducting research.