IEEE does not have a specific format for lit reviews or methodologies. You can find their full style manual here, with details on citing references in chapter 5.
Other Helpful Resources:
1) Here is a link to the IEEE Author Center - I know this resource is for authors publishing with IEEE but it mentions how to properly create an article using their style guide. I took a look and did not see anything about methodologies and lit reviews specifically but perhaps there is something in this resource that maybe helpful to you. Note: The resource includes templates.
2) Take a look at our IEEE database (you can find it using our Databases by Title A-Z list) and look for an article published by IEEE with a methodology or lit review in it related to your topic and follow that process. Note: perhaps refer to articles you are already using for your own lit review as a model.
3) You might also wish to consult your course syllabus or with your professor for more details, or think back to your ENGL 202C class, if you've taken it.