Questia Digital Library
Questia Digital Library: Questia is the online library that provides 24/7 access to the world's largest online collection of over 67,000 books and 155,000 journal articles in the humanities and social sciences.
Free Online Books
Free Online Books: Listing more than 35,000 English works in various formats.
Here, you can search library catalog using title, author, or subject as keyword.