Dictionaries, encyclopedias, and handbooks provide basic and background information on almost any subject.
Dictionary: Provides the meaning of words in a language or field of knowledge.
Encyclopedia: A single or multi-volume reference work that provides general background articles on either a wide range of topics or a more specialized discipline.
Handbook: A compact reference book giving the essential information in a given field of study.
Lists annotated entries for important books, articles, book reviews, dissertations, theatrical productions, reviews of productions, audiovisual materials, electronic media, and other scholarly and popular materials related to Shakespeare.