How much time do you plan to spend in the research stage? The point of the research stage is to show you have read around the topic and you understand the previous research that has been conducted, but you've also understood its limitations.
The Internet is a good starting place during the research stage.
Discuss few alternatives of the dissertation title with your mentor before you start writing the proposal.
If you want to make the proposal convincing, its format has to be clean and easy to follow.
Here are a few tips that will help you go through it: It's important to find enough resources to fully understand the phenomenon you're focused on, but you'll need to stop researching at one point or another.
Many students fall into a trap: they think they have to read everything that was ever written regarding the dissertation question they are about to elaborate.
When you get to the point of writing a dissertation, you're clearly near the end of an important stage of your educational journey.
Wikipedia is not a reliable source, but it can take you to some great publication if you check out the list of references on the pages of your interest.
Librarians are really helpful at this point of the project development.
Don't avoid the actual library and ask the librarian to provide you with some interesting publications.
This is a shorter paper than the final dissertation, but it's equally as important because this is the point when you'll think of a significant question and you'll set up a plan for assembling information and writing the paper.
Even if the proposal is not mandatory in your university, you should still write it and discuss the points with your mentor.