reference_work
1. [ noun ] (writing) a book to which you can refer for authoritative facts
Synonyms: reference book_of_facts reference_book
Examples:

"he contributed articles to the basic reference work on that topic"

Related terms: book encyclopedia directory annual source_book cookbook handbook atlas instruction_book wordbook refer
Similar spelling:   reference_to
  reference_book
  reference_grid
  reference_point
  reference_frame
  reference_system
  reference_manual