What Indicates a Good Source

A good source is one that focuses mainly or partly on the topic you are exploring, one containing writing that agrees with the point you are trying to prove, and one that would be beneficial to refer to in your paper.

Don't list a source in your works cited page unless you refer to it in your paper (either directly or indirectly); don't use a quote from a source unless it genuinely helps prove your thesis. You might have a source requirement to fulfill, but professors can tell if your works cited page consists of sources that are listed just to meet that requirement.