Primary sources are first-hand perspectives by someone who was there or was witness to something. Biographies are a good example of a secondary source. They are books written about a particular ...

Primary sources have not been filtered, but secondary sources have been filtered. Examples of secondary sources include biographies, textbooks, documentaries, encyclopedias, books. What was going on ...

Family history books are secondary sources. Inscriptions on gravestones are another example. The information was supplied by a person who possibly provided inaccurate details. Also, the person who ...

Examples of ... within your industry. Secondary research uses outside information assembled by government agencies, industry and trade associations, labor unions, media sources, chambers of ...

which is derived from secondary sources. As these non-operating revenue sources are often unpredictable or nonrecurring, they can be referred to as one-time events or gains. For example ...