Citation Example
This example is based on the Citation Proposal to Schema.org which resulted in the citation property being promoted from MedicalScholarlyArticle to CreativeWork.
RDFa
<div xmlns="http://www.w3.org/1999/xhtml"
prefix="schema: http://schema.org/"
>
<div typeof="schema:ScholarlyArticle">
<div rel="schema:citation">
<div typeof="schema:Book">
<div property="schema:datePublished">2004</div>
<div property="schema:name">The Dinosauria</div>
<div rel="schema:author">
<div typeof="schema:Person">
<div property="schema:givenName">MC</div>
<div property="schema:familyName">Langer</div>
</div>
</div>
<div rel="schema:url" resource="http://books.google.co.uk/books?vid=ISBN9780520242098"></div>
</div>
</div>
<div rel="schema:citation">
<div typeof="schema:ScholarlyArticle">
<div property="schema:datePublished">1991</div>
<div property="schema:name">Basal archosaurs: phylogenetic relationships and functional implications</div>
<div rel="schema:author">
<div typeof="schema:Person">
<div property="schema:givenName">PD</div>
<div property="schema:familyName">Sereno</div>
</div>
</div>
<div rel="schema:url" resource="http://dx.doi.org/10.2307/3889336"></div>
</div>
</div>
</div>
</div>
Microdata
<article itemscope itemtype="http://schema.org/ScholarlyArticle">
<p>In each of the successively more derived clades Ornithodira, Dinosauria, and Saurischia, the primitive state was an increasingly long neck
(<a href="http://dx.doi.org/10.2307/3889336" title="Basal archosaurs: phylogenetic relationships and functional implications" data-rid="ref-1">Sereno, 1991a</a>;
<a href="http://books.google.co.uk/books?vid=ISBN9780520242098" title="The Dinosauria" data-rid="ref-2">Langer, 2004</a>).</p>
<ul id="references">
<li itemprop="citation" itemscope itemtype="http://schema.org/ScholarlyArticle" id="ref-1">
<span itemprop="author" itemscope itemtype="http://schema.org/Person">
<span itemprop="familyName">Sereno</span> <span itemprop="givenName">PD</span>
</span>
(<span itemprop="datePublished">1991</span>)
<cite itemprop="name"><a itemprop="url" href="http://dx.doi.org/10.2307/3889336">Basal archosaurs: phylogenetic relationships and functional implications</a></cite>
<span>
<cite class="source">Society of Vertebrate Paleontology Memoir</cite> <span class="volume">2</span>:<span class="fpage">1</span>
</span>
</li>
<li itemprop="citation" itemscope itemtype="http://schema.org/Book" id="ref-2">
<span itemprop="author" itemscope itemtype="http://schema.org/Person">
<span itemprop="familyName">Langer</span> <span itemprop="givenName">MC</span>
</span>
(<span itemprop="datePublished">2004</span>)
<cite itemprop="name"><a itemprop="url" href="http://books.google.co.uk/books?vid=ISBN9780520242098">The Dinosauria</a></cite>
</li>
</ul>
</article>
Expressed Using Turtle
@prefix : <http://schema.org/> . [] a :ScholarlyArticle; :citation [ a :Book; :author [ a :Person; :familyName "Langer"; :givenName "MC" ]; :datePublished "2004"; :name "The Dinosauria"; :url <http://books.google.co.uk/books?vid=ISBN9780520242098> ], [ a :ScholarlyArticle; :author [ a :Person; :familyName "Sereno"; :givenName "PD" ]; :datePublished "1991"; :name "Basal archosaurs: phylogenetic relationships and functional implications"; :url <http://dx.doi.org/10.2307/3889336> ] .
Example of an unstructured citation
<li itemprop="citation">Miyazaki N. 2002. Teeth. In: Perrin WF, Würsig B, Thewissen JGM, eds. Encyclopedia of marine mammals
(1st ed.) San Diego: Academic Press. 1227-1232</li>
Example of an unstructured citation with known type
<li itemprop="citation" itemscope itemtype="http://schema.org/ScholarlyArticle">Udvarhelyi, I.S., Gatsonis, C.A., Epstein, A.M.,
Pashos, C.L., Newhouse, J.P. and McNeil, B.J. Acute Myocardial Infarction in the Medicare population: process of care and
clinical outcomes. Journal of the American Medical Association, 1992; 18:2530-2536.</li>