Reference books are used primarily to verify facts and supply background information. Examples of reference books include: encyclopedias, dictionaries, handbooks, and almanacs. They are often produced by experts in a particular field are not intended to be read cover-to-cover. They usually have extensive indexes or an alphabetic or chronological arrangement that allows quick access to information.
See a list of print encyclopedias that will be useful for researching monsters in the box to the right.