Education, in today's scenario has become a necessity of life. No matter what field you are into, you need to have a knowledge of your work. In order to stay ahead from other, you should have a profound knowledge. For that, Reference books can become your guide. Reference books contain facts, figures, biographical information, or other such information, so as to make it a valuable tool for answering reference questions. It's a book intended for consulting when reliable information is required. You can get reference books for numerous topics. These may include catalogs, concordances, dictionaries, directories, discographies and bibliographies, encyclopedias, glossaries, handbooks, indexes, manuals, research guides, union lists, yearbooks, etc.
One of the important reference books is Dictionary. It's a wonderful reference book having collection of words listed alphabetically in any particular language, with all possible description, pronunciations, synonyms, antonyms, related and contrasted words. It can also be used for language translation. For example, English to Spanish or Spanish to English and many more. Some of noteworthy features of a Dictionary are:
(1) It is being justified for some or the other purposes;
(2) It holds the data that has been chosen for the idea of fulfilling those functions; and
(3) Is designed to ascertain associations between the data so as to meet the requirements of user.
Another useful reference book is Thesaurus. It is a reference book containing synonyms and at times antonyms too. Thesauruses are mainly intended to draw distinction between analogous words and assists in choosing accurately the most appropriate word. All the entries in Thesaurus are arranged alphabetically and structured properly so that existing relationships between perceptions are made clear.
Encyclopedia is another resourceful reference book . It contains information on almost all the twigs of topics. Encyclopedias cover each of the subjects in the form of articles, which are typically ordered alphabetically by article name. The purpose of having an encyclopedia is to gather information dispersed all around the sphere; to bring forward its facts to us and convey it to those who will come after us. General encyclopaedias are mostly a guide on "how to do" topics of various things, along with an entrenched dictionary. Apart from that there are lots of other encyclopedias available which cover numerous topics on different cultures and ethnic which nationalized perceptions.