There are tens of thousands of books and ebooks related to Languages and Communication available via Library Search Books, and journal articles, books and more via Library Search Everything.
However, you may want to search individual collections to get a more thorough understanding, and surface resources not yet held by the UEA. You can find the full list of specialist resources for Languages and Communication by selecting 'Language and Communication Studies' from the subject drop down list in the A-Z Databases list.