Useful Reference Sources
Almanac, Atlas, Dictionary, Encyclopedia, Thesaurus.
An annual calendar containing important information. I would use the Almanac to learn facts on a certain year.
A book of maps that shows you where to go. I would use the Atlas to find out where i'm going.
A book to learn meanings of words and pronunciation of a word. I would use a dictionary to learn how to spell words, learn the meaning, and pronounce the word.
An Encyclopedia is a book of facts arranged by ABC order. I would use an Encyclopedia to get facts about a subject.
A book that lists words in groups of synonyms and antonyms . I would use a Thesaurus to learn words that are similar to the word or different from he word.