The title is nearly always in the original language of publication, but a publisher or archive might choose to place all article titles in one language, such as English, and use the translated title element to hold the original title (Translated Title <trans-title>).
Within a bibliographic reference citation, a subtitle cannot be preserved separately. Some tag sets place it within the title; some leave it as untagged data characters within the text of the <citation>. Although this Suite cannot enforce either structure, retrieval performance will be enhanced if the subtitle is placed into the <article-title> element in cited material, so this is considered best practice.
<!ELEMENT article-title (#PCDATA %title-elements;)* >
Any combination of:
In a bibliographic reference (punctuation and spacing removed):
...<ref-list> <title>References</title> <ref id="bid.41"> <label>1</label> <citation> <person-group> <name><surname>Olson</surname><given-names>M</given-names></name> ... </person-group> <article-title>A common language for physical mapping of the human genome</article-title> <source>Science</source> <year>1989</year> <volume>245</volume> <issue>4925</issue> <fpage>1434</fpage> <lpage>1435</lpage> <pub-id pub-id-type="pmid">2781285</pub-id> </citation> </ref> </ref-list>...
In a bibliographic reference (punctuation and spacing preserved):
...<ref-list> <title>References</title> <ref id="B8"><label>8</label> <citation> <name><surname>Weissert</surname> <given-names>W</given-names></name>, <name><surname>Livieratos</surname> <given-names>B</given-names> </name>. <article-title>Effects and costs of day-care services for the chronically ill: a randomized experiment</article-title>. <source>Medical Care</source> <year>1980</year>; <volume>18</volume>: <fpage>567</fpage>–<lpage>584</lpage>. <pub-id pub-id-type="publisher-id">WES-6772889</pub-id>. </citation> </ref> </ref-list>...