Some books are to be tasted, others to be swallowed, and some few to be chewed and digested.
In this course you are learning about some of the most basic reference books, but there are thousands of other sources that exist and can help answer questions. In fact, in answering questions, you should think of the world as your resource. Every book, pamphlet and magazine in your branch can help answer questions. People are a wonderful reference source. Knowing the experts in your own community can help you give excellent service to your patrons.