Scholarly encyclopedias, handbooks, bibliographies, and other reference works are a great place to start and provide helpful overviews of/citations to the relevant scholarship.
The Atlas of North American English (Labov, Ash, and Boberg)
The Cambridge Grammar of the English Language (Huddleston and Pullum)
Print copy available in SML, Starr Main Reference Room (Non-circulating)
A large collection of annotated bibliographies with many articles in the Linguistics module.
Includes 56 books in the Linguistics collection.
Many resources are available here via the Language and Linguistics collections.
Documenting the sources you use in your final project is a key part of the research and writing process. Complete and accurate citations to the journal articles, books, and other items you use will allow readers to verify your sources and explore them further if they'd like to learn more about the issues you've raised.
Please consult the Unified style sheet for linguistics for information on how to cite your sources: