The literature review: why?
These e-modules about Doing a literature review explain why literature reviews are needed, how you can conduct one and how to report. The focus is the literature review within a dissertation or thesis, but many of the ideas are transferable to other kinds of writing, such as a peer-reviewed publication (typically in a journal, or - depending upon the discipline - as a book chapter), or a report resulting from a research project or other commissioned research.
Related.
Suggested.
Do's and don'ts (PDF)