Longman Dictionary of Contemporary English
Wiktionary
n. 1 A book providing factual information. 2 (context libraries English) such a book that may not be borrowed.
WordNet
n. a book to which you can refer for authoritative facts; "he contributed articles to the basic reference work on that topic" [syn: reference, reference work, book of facts]
Usage examples of "reference book".
It was a little like a clumsy person using a shod foot to find the right page in a tissue-paged reference book.
When and if I do so, if I am still in health, I hope to go far away to an address that will appear in no directory or reference book.
A door in the far wall opened to reveal a man in a medical coverall carrying a medikit, a docustat and a fat reference book.
You don't know the standard reference book-films, the quick methods of winnowing and skipping.