A literature review is an evaluative report of information found in the literature related to your selected area of study. The review should describe, summarise, evaluate and clarify this literature. It should give a theoretical base for the research and help you (the author) determine the nature of your research.
Source Credit: http://libguides.library.cqu.edu.au/litreview
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Image Source: https://www.lib.ncsu.edu/tutorials/litreview/