<Ul> <Li> Narrative sources or literary sources tell a story or message . They are not limited to fictional sources (which can be sources of information for contemporary attitudes) but include diaries, films, biographies, leading philosophical works and scientific works . </Li> <Li> Diplomatic sources include charters and other legal documents which usually follow a set format . </Li> <Li> Social documents are records created by organizations, such as registers of births and tax records . </Li> </Ul> <Li> Narrative sources or literary sources tell a story or message . They are not limited to fictional sources (which can be sources of information for contemporary attitudes) but include diaries, films, biographies, leading philosophical works and scientific works . </Li> <Li> Diplomatic sources include charters and other legal documents which usually follow a set format . </Li> <Li> Social documents are records created by organizations, such as registers of births and tax records . </Li>

Primary research is characterized by original and direct investigation