[1] : WordNet (r) 2.0

reference book
     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
see also:
reference reference work book of facts 

[2] : Moby Thesaurus II by Grady Ward, 1.0

37 moby thesaurus words for "reference book":
   baedeker, yellow pages, atlas, bibliography, business directory,
   calendar, casebook, catalog, catalogue raisonne, checklist,
   city directory, classified catalog, classified directory,
   concordance, cyclopedia, diatesseron, dictionary catalog,
   directory, encyclopedia, finding list, gazetteer, guidebook,
   handbook, handlist, harmony, index, itinerary, phone book,
   polyglot, record book, road map, roadbook, source book, studbook,
   telephone book, telephone directory, work of reference

Book >> B Words
Book, definition of term: Book
book_pag1.html

Book Value >> B Words
Book Value, definition of term: Book Value
book+value_pag1.html

Book Review >> B Words
Book Review, definition of term: Book Review
book+review_pag1.html

Book Bag >> B Words
Book Bag, definition of term: Book Bag
book+bag_pag1.html

Blue Book >> B Words
Blue Book, definition of term: Blue Book
blue+book_pag1.html

Black Book >> B Words
Black Book, definition of term: Black Book
black+book_pag1.html

Book Of Mormon >> B Words
Book Of Mormon, definition of term: Book Of Mormon
book+of+mormon_pag1.html