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What are Tertiary sources?

9 views   |   Last updated on Oct 25, 2019   


Tertiary Sources

The purpose of these sources are to index, abstract, organize, compile, or condense other sources.

  • Tertiary sources usually are not authored by one person, but many
  • Repackaged primary/secondary sources in one quick reference source
  • May provide subjective commentary on primary/secondary sources


  • Dictionaries
  • Encyclopedias
  • Almanacs
  • Fact books
  • Directories
  • Guidebooks
  • Manuals
  • Indexing and Abstracting sources

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