The literature review should be a greatly expanded version of the one written for the proposal. It should summarize and synthesize the relevant literature around the problem that was identified, and the proposed solution. It should include a minimum of 15 references (those mentioned in the annotated bibliography would be included). These references should be no older than 10 years and come from peer-reviewed journals. Textbooks may also be used. Check the CSP library first, that would be the most reliable place to find references. Refer to APA guidelines to learn more about how to appropriately use in-text citations within your paper.