This document discusses reliable and unreliable sources for research. Reliable sources include books, peer-reviewed journals and articles, dissertations, and websites ending in .edu or .gov as these are often from educational institutions or government agencies. Unreliable sources like Wikipedia can be used as a starting point but require confirmation from reliable sources, as the information may not be thoroughly vetted. Blogs, personal websites, and commercial websites with agendas are also generally unreliable. The document provides guidelines for evaluating source reliability based on author credentials, evidence used, and potential biases.