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Primary sources are also sets of data, such as health statistics, which have been tabulated, but not interpreted. 1  Journals or Periodicals: main type of publication in which scientific research is reported. 2  May be published by learned societies or by commercial publishers. 3  A researcher(s) submits an article to a journal.
Primary sources are original materials that have not been altered or distorted in any way. 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.