Most reference resources are considered "tertiary" souce materials. These books and websites provide background information and an overview and analysis of a subject or concept/ Unlike a secondary source book or journal article, tertiary sources are not intended to be read in their entirety. Instead, they are most often used to clarify terms and concepts about a topic.Tertiary sources include:
- Almanacs and Factbooks
- Bibliographies*
- Chronologies
- Dictionaries and Encyclopedias*
- Indexes and Abstracts
- Manuals
- Textbooks*
*Also considered secondary