I believe the answer is "proper documentation."
You would still be able to refer back to your sources even if you just had list of links(not a works cited), having a works cited does not ensure that you have reliable sources(all of your sources in a works cited could be Wikepedia(i.e. not reliable)), and a works cited does not ensure a well-written research paper(you could have a terrible paper, but still have a correctly formatted Works Cited. The point is, having a works cited will not improve the quality of your research paper).
Hope this helps!