Here are some places to look for books on your research topic:
West Sound Academy Library Catalog
Reference eBook databases
WorldCat
Local public libraries
Digital libraries
Google Books
Also: learn how you can use an Interlibrary Loan to get a book or article you need that's not owned by your local library.
If you find a book which is really useful, have a look at its bibliography. The bibliography can provide a wealth of leads to further sources of useful, relevant information on your topic.
Find books, digital resources (ebooks), WebPath Express websites, and Open Educational Resources (OER).
Google Books is a database of published books that have been scanned by Google and made available in Google search results or from the Google Books site.
You can browse books online, and...if the book is out of copyright, or the publisher has given Google permission, you'll be able to see a preview of the book, and in some cases the entire text. If it's in the public domain, you're free to download a PDF copy.
Google Books come from two sources: the Library Project (scanned books from Harvard University Library, New York Public Library and other prominent libraries) and the Partner Program. In the Partner Program, authors and publishers are able to use the Google Books site to gain wider audiences and recognition for their works.
NOTE: This cooperation in the Partner Program results in Google Books having some nonfiction titles from self-published authors that are less than credible sources for serious research. Before using a book from Google Books in your research, check to see if it's held at any public or university libraries and if it has been reviewed in any of the major publishing or library journals. If in doubt, check to see if the book is listed in WorldCat!