Sometimes you need help with writing a specific type of paper. You will find help for common assignments as well as general writing help below. Do not forget that your professor can help you with the specifics of their assignment.
The understand how literature reviews are used in your area of study, nothing is better than to read peer-reviewed journal articles in that discipline.
Advice about writing literature reviews:
From the University of North Carolina at Chapel Hill: https://writingcenter.unc.edu/tips-and-tools/literature-reviews/
From the Owl Purdue Online Writing Lab: https://owl.purdue.edu/owl/research_and_citation/conducting_research/writing_a_literature_review.html
From the University of Wisconsin-Madison Writing Center: https://writing.wisc.edu/handbook/assignments/reviewofliterature/
From Florida State University: Library guides on literature reviews in: