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The structure and layout of a literature review vary greatly diverging from one area of study to another and even due to the differing missions of every research.
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If you find too many of materials with the same name then it means the source is reliable.
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A research must be authentic enough to be replicated by other researchers to draw similar findings that make the study validate and safe to use.
If you find the course of literature review challenging, then don't hesitate to seek help from your advisor.
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