Figuring out how to structure your dissertation can be difficult. A good idea is to look up the dissertation of a scholar you admire in your field. See how he or she wrote and structured the dissertation and consider how you might employ some of those choices in your own work. If your research is similarly focused, you can also utilize the bibliography the scholar used to help you find more research.
Let the community of academics help you! Dissertations are readily available online, through inter-library loan and sometimes through a quick email to another library.