A critical review is one in which the writer describes and evaluates the book, in terms of accepted literary and historical standards, and supports this evaluation with evidence from the text. The following pointers are meant to be suggestions for writing a critical review. Firstly, basic requirements. Simply stated, the reviewer must know two things in order to write a critical review: the work being reviewed and the requirements of the genre to which the work belongs, such as a novel, short story, biography, poetry, etc. Knowledge of the work demands not only an attempt to understand what the author's purpose is and how the component parts of the work contribute to that purpose, but also some knowledge of the author. And knowledge of the genre means understanding the art form and how it functions. Then, after that we come to are the minimum essentials of a book review.