section_path: Content/Non-fiction/Reference
section_name: Reference
paragraph_text: Reference
  
  Reference books are non-fiction books intended to be quickly referred to for information, rather than read beginning to end. The writing style used in these works is informative; the authors avoid opinions and the use of the first person, and emphasize facts.
  
  An almanac is a very general reference book, usually one-volume, with lists of data and information on many topics. An encyclopedia is a book or set of books designed to have more in-depth articles on many topics. A book listing words, their etymology, meanings, and other information is called a dictionary. An atlas is a book containing a collection of maps. A specialized reference work giving information about a particular field or technique, often intended for professional use, is often called a handbook. Books which try to list references and abstracts in a certain broad area may be called an index, such as Engineering Index, or abstracts such as chemical abstracts and biological abstracts.