Questia is the world's largest online library of books! With more than 67,000 books and over 1.5 million articles; along with a dictionary, thesaurus and encyclopedia, your referrals are sure to find the reading and research materials they need. High school and college students love Questia for the full-text search of more than 30 million pages of copyrighted content, along with our tools which allow on-page highlighting, note taking, bookmarking, and best of all -- citation and bibliography generation, saving them an average of more than 4 hours of time on each research project.