A literature review is the kind of a written paper that aims at reviewing the critical points of certain knowledge of a certain topic. The ultimate goal of every literature review paper is to present the reader the current literature on a topic and provide justifications for the future investigation in the area.
 
A perfect literature review paper is characterized by the logical flow of ideas, current and relevant sources, and appropriate format style, use of terminology and comprehensive view of the previous research on the topic.
 
Actually, a literature review paper investigates scholarly articles, dissertations, conference proceedings relevant to their particular issue. The major purpose is to offer an overview of significant literature published on a topic. What stages does literature review papers require? A literature review paper requires the following:

• Formulation of the problem;
• Literature search;
• Evaluation of the data;
• Analysis and interpretation.

A sensible literature review paper comprises the following elements:

• Overview of the theory or issue under consideration, along with the purposes of your literature review paper;
• Division of works under review into categories;
• Explanation of the similarity and difference between the works;
• Conclusions as to the works that are best considered in their arguments, which ones are the most convincing and which ones are the greatest contributions to the development of their research area.

Thus, the purpose of writing a literature review paper is to place each work in the context of its contribution to the understanding of the subject under review. Your literature review paper can also aim at describing the relationship of each work to the others under investigation. The students who are to write the literature review papers should identify new ways to interpret and fill in the gaps of the previous researches.