Many librarians in many institutions are helping undergraduate and graduate students prepare literature reviews. I'd like to share their work with you here. These are some of the best resources I use when I teach about lit reviews. Of course, you can find further reading by Googling, but I think you will have plenty to work with right here.
We even have some entire books that provide more in-depth descriptions and suggestions on writing lit reviews in the social sciences. Here are a few I recommend if you'd like further guidance at your own pace.