Your link from the LII at Cornell is part of a larger work, Introduction to Basic Legal Citation by Peter W. Martin, which describes how legal sources are cited according to the Harvard Bluebook system in American legal writing— briefs, judicial opinions, and other works by lawyers and judges. This format may differ from the one preferred by the style guide you are following, and you should adhere to the guidance of your style guide and your editor. For what it's worth, however, MLA, APA, and Chicago all seem to stipulate this format for American court cases, and it is the format used by the law reviews and the federal courts.
To simplify, the citation of an American judicial decision generally takes this format:
[Case Name], [Volume of Reporter] [Abbreviated Name of Reporter] [Starting page number of case] ([Abbreviated Name of Court] [Date of Decision]), [electronic source info]
The principal gotcha here is that the case is unpublished (note the NOT TO BE PUBLISHED IN OFFICIAL REPORTS across the top of the document), and so it would not appear in California Appellate Reports, which the official reporter for the California 4th District Court of Appeal, Division 1 (and for all the other California appellate courts). Depending on the court, this could mean that the decision is never to be cited at all in legal writing, although that would not restrict you in other fields. In any case, the fields referring to reporter and page number are not applicable, and instead, a docket number or reference to an electronic source (URL or database name and record number) would take its place. Thus, you will probably see this cited as something like
David L. Riley v. State of California 2013 WL 475242 (Cal. Ct. App. 4th Dist. Feb. 8, 2013)
where 475242 is the Westlaw number according to various blogs, or more compactly
Riley v. California No. D059840 (Cal. Ct. App. 2013)
I cannot speak to the formats used in other systems (whether citations systems or legal systems).