This document provides guidance on writing a literature review. It states that the literature review is an evaluation and synthesis of literature, not a summary. Key information should be identified using a matrix. The review should identify themes across articles and include comparisons of different points of view or research outcomes. It should relate the study to previous research and evaluate literature to define important aspects being examined or to substantiate the conceptual framework. The content should be drawn from peer-reviewed sources or have justification for other sources. The review synthesizes literature on the topic being investigated.