We have many useful books on linguistics, phonetics and cultures. Use the library catalog to find useful resources.
Some suggested Search Terms to use when searching Elmhurst Library Catalog:
These databases have information on countries of origin for language group speakers, culture of language speakers, demographic information and some basic phonetics-related information.
For the assignment, you will be looking for articles that add to the information you are gathering about language speakers and communities. These databases are places to look.