ISBN numbers for the books in the "Bibliography" section (where applicable)
More citations and reference links. Please use the appropriate templates to generate the footnotes, like {{cite web}} when citating a website, or {{cite news}} when citating a news source. See Wikipedia:Footnotes for an explanation and more information on how to generate footnotes using the <ref> and </ref> tags. See Wikipedia:Citation templates for a complete list of citation templates.
