What is the difference between primary sources and secondary sources? a. Primary sources relate to publicly available data, like historical documents (e.g., a transcript of oral history, interview data), raw data from an experiment, or demographic records. b. Secondary sources relate to publicly available data, like historical documents (e.g., a transcript of oral history, interview data), raw data from an experiment, or demographic records. c.Secondary sources have been produced for public consumption in the form of a journal article or a chapter in an edited book. d. Primary sources have been produced for public consumption in the form of a journal article or a chapter in an edited book.