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ENVS 328 - Politics of the Global Environment

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Debby Andreadis

Primary vs Secondary Sources

Types of Sources

Primary Source

  • Reports original research
  • Results of experiments
  • Reports on new discovery
  • Results of clinical trials

Secondary Source

  • Reports and analyzes previous results without adding new data
  • Editorializes on information from previously published paper
  • Interprets previous study

Tertiary Source

  • Compiles secondary sources
  • Creates a synopsis about a topic


Primary Source

  • Published results of an experiment or clinical trial
  • Published results of a research study or natural observation
  • Proceedings of a Conference or Meeting

Secondary Source

  • News article reporting on an experiment
  • Review of a series of articles on a given topic
  • Editorial article

Tertiary Source

  • Encyclopedia articles
  • Textbooks

Search for Books, Videos, etc.

Search Summon, CONSORT and OhioLINK for books and other materials containing information about your topic. Items requested from other libraries will be delivered to the Circulation desk in 3-5 days. If you cannot find what you need in those catalogs, try WorldCat (but remember that you will need to fill an Interlibrary Loan form when requesting from WorldCat).



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Search for an item in libraries near you: >>

Denison Libraries, 100 W College, Granville, Ohio 43023
Phone: 740-587-6235, email:
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