Examples of book reviews and review essays can be foundin various historical journals or by consulting the Book Review Digestor Current Book Review Citations.Also, there are numerous websites that are devoted exclusively to theworks of Art Spiegelman and Eli Wiesel. These "sample" reviews andwebsites are to be used only for general guidance; theyare not to be employed as a source for specific ideas to be included in yourreview.
Writing a critical review requires you to know and understand the work. This means that you will need to understand the purpose of the book as well as the author. In addition to that, knowing the right standards to base the review on is also important so that it gives your own review some credibility. In addition to that, it is always good to look at some book review examples on critical reviews so that you can understand how they write a good review. There are often many free book reviews on the internet that you can check. Scholastic for example, has an example of a book review as well as an interactive site dedicated to writing book reviews.
A great place to learn about book reviews is to look at examples.
Your personality shows magnificently in what you say when you write book reviews. When writing derogatory remarks, you could end up accomplishing nothing more than making yourself look ridiculous. Some great examples of book reviews can be found at Book Town in author/reviewer Susan's Whitfield's column.