Summarize that right-fit sources can add interest, evidence, and background information to your paper, and make connections between how different experts are thinking about your topic. However, not all sources are a right fit. Sources that are out of date, irrelevant, or inaccurate, or are written by non-experts, filled with opinions versus facts, and/or written for the purpose of selling or entertaining are wrong-fit sources that will negatively affect the quality of your work. It’s important to choose sources carefully so that your paper is trustworthy, clear, and engaging.