Information sources

Classification

Origin

• A primary information source is a place where original information resides (usually true).

• A secondary information source is a document or record that relates or discusses information originally presented in primary information sources (needs to be verified).

• Tertiary information sources are made up of lists or summaries of primary or secondary sources, such as bibliographies, lists of readings, or articles on research.

Authority

• Closed Source Information.

• Open Source Information.