Tertiary Information Sources
Even further removed from the original source is a tertiary source. An example is a bibliography (citation list) of primary and secondary sources about a person or topic.
For example:
A
bibliographic guide to North American industry : history, health, and hazardous
waste by Dale A Stirling. Publisher: Lanham, Md.: Scarecrow Press, 2009.
Encyclopedias are often viewed as tertiary sources because they review a topic and usually include bibliographies of primary and secondary sources consulted.
Databases and indexes are tertiary sources which provide access to materials on specific topics.
Copyright 2010-2012 Old Dominion University -- ODU Libraries, updated September 2012