You first have to ask yourself are the references important enough to be listed. If the reference seems to be a little shallow, then you add the sources. But usually, sources from other places don't really seem to be of importance except if they were extra-important. List things that are sub-texed, and vivid to the references. DONT ADD ANYTHING THAT CAN COPY WHAT YOU HAVE ALREADY SAID. EXAMPLE: If I said that it was raining outside, then I have made that as a topic. But then at the end of my reference, I say: And it's raining outside. I'm repeating the topic, plus making the topic shallow, and unrelational to my whole entire reference.