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primary source
Primary sources are original materials that have not been altered or distorted in any way.〔"(Primary sources )". James Cook University.〕 In the study of history as an academic discipline, a primary source (also called original source or evidence) is an artifact, a document, a recording, or other source of information that was created at the time under study. It serves as an original source of information about the topic. Similar definitions are used in library science, and other areas of scholarship, although different fields have somewhat different definitions. In journalism, a primary source can be a person with direct knowledge of a situation, or a document written by such a person.
Primary sources are distinguished from secondary sources, which cite, comment on, or build upon primary sources. Generally, accounts written after the fact with the benefit (and possible distortions) of hindsight are secondary.〔"(Primary, secondary and tertiary sources )". University Libraries, University of Maryland. (accessed 16 Jul 2013)〕 A secondary source may also be a primary source depending on how it is used.〔"(Primary and secondary sources )". Ithaca College Library.〕 For example, a memoir would be considered a primary source in research concerning its author or about his or her friends characterized within it, but the same memoir would be a secondary source if it were used to examine the culture in which its author lived.〔Lamb, David. "(Finding and Using Sources: A Brief Guide )". Academic Writing Tutor. Retrieved 15 September 2013.〕 "Primary" and "secondary" should be understood as relative terms, with sources categorized according to specific historical contexts and what is being studied.〔
==The significance of source classification==
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