The document compares print and online reference tools, noting that while libraries once had dedicated reference sections containing print books, many reference resources are now available online through tools that can be searched to quickly find definitions, maps, statistics, and other information. Both print and online reference tools provide facts and information, but online tools allow for keyword searches while print versions require using indexes or guide words to locate information. Common reference tools discussed include almanacs, atlases, dictionaries, encyclopedias, periodicals, and thesauruses.