A good literature review should critically evaluate the quality and findings of the research.
A good literature review should avoid the temptation of stressing the importance of a particular research program.
Use an overall introduction and conclusion to state the scope of your coverage and to formulate the question, problem, or concept your chosen material illuminates.
Usually you will have the option of grouping items into sections—this helps you indicate comparisons and relationships.
Evaluating the credibility of sources is one of the most difficult aspects of a literature review, especially with the ease of finding information on the internet.
The only real way to evaluate is through experience, but there are luckily a few tricks for evaluating information quickly and accurately. Google does not distinguish or judge the quality of results, only how search engine friendly a paper is.
The fact that a researcher is undertaking the research program speaks for its importance, and an educated reader may well be insulted that they are not allowed to judge the importance for themselves.
They want to be re-assured that it is a serious paper, not a pseudo-scientific sales advertisement.
The format of a review of literature may vary from discipline to discipline and from assignment to assignment.
A review may be a self-contained unit — an end in itself — or a preface to and rationale for engaging in primary research.