This varies depending on the database you are using. Here is our A-Z list of databases. Our EBSCO databases allow you to limit search results to book reviews only. Academic Search Complete and Literary Reference Center Plus are two databases to try. Here is an example of searching for book reviews for Neil Gaiman's book 'American Gods' in Literary Reference Center Plus:
After searching, narrow results to Reviews by choosing the appropriate box search filter to refine results:
JSTOR is another library database that contains book reviews and search filter to assist with narrowing results. For more help with narrowing database results, please feel free to email, chat, or call the library at 608.246.6640.