It is important because the sources tell you whether the article was credible. When you have an article that has bad source, you are running the risk of having, wrong, opinionated data. This can discredit you paper if you use it.
<span>The following represents the Lady in "The Lady of Shalott" by Alfred, Lord Tennyson except this description (A) liveliness and cheer. The Lady of Shallot is a woman who is not allowed to see what is outside, most especially the town of Camelot. She lives in a tower and is not allowed to look at the window.</span>