What is Secondary source?
{{for|Wikipedia's policy on the use of secondary sources|WP:PSTS}} A '''secondary source''' is a [[document]] or [[recording]] that writes or speaks about [[information]] that is one step removed from the original source.<ref>Randall VanderMey ''et al'' 2014. ''The College writer: a guide to thinking, writing, and researching''. Stamford, CT: Cengage, p. 402.</ref> The secondary source depends on the ''[[primary source]]'' or ''original source'' of the information. Secondary sources [[interpretation|interpret]], [[wikt:evaluate|evaluate]] or [[Discussion|discuss]] information found in [[primary source]]s.<ref name=Sapsford142>Roger Sapsford & Victor Jupp (eds) 2006. ''Data collection and analysis''. London: SAGE, p. 142.</ref> In [[historiography]], a secondary source is a study written by a scholar about a topic. Secondary sources frequently [[cite]] primary sources and other secondary sources.<ref name=Hanson79>F. Allan Hanson 2007. ''The trouble with culture: how computers are calming the culture wars''. Albany: State University of New York, p. 79</ref> They rarely cite [[tertiary source]]s.<ref name=Hanson79/> == Example == A secondary source would be a book on 13th century [[politics]], while [[Magna Charta|Magna Carta]] itself would be a primary source.<ref name=Sapsford142/> Many secondary sources use extensive [[citation]]s in the form of [[wikt:footnote|footnotes]] or endnotes. == Legal use == The main use of secondary sources in [[law]] is to explain the law.<ref name=Yelin150>Andrea B. Yelin & Hope Viner Samborn 2009. ''The legal research and writing handbook: a basic approach for paralegals''. New York: Aspen; Austin, TX: Wolters Kluwer, p. 150.</ref> They also explain legal concepts.<ref name=Yelin150/> They are used to analyze and describe laws as well as comment on them.<ref name=Yelin150/> Judicial decisions and opinions by qualified [[expert]]s are secondary sources.<ref>Timo Koivurova 2014. ''Introduction to international environmental law''. Oxford; New York: Routledge, p. 60.</ref> ==Re