...
<ref>
<element-citation publication-type="commun">
<person-group>
<name><surname>Nightingale</surname>
<given-names>Florence</given-names></name>
</person-group>
<comment>115 Park Street, W, [London, GB]</comment>
<source>Letter to: Marquis Townshend</source>
<year>1864</year>
<month>Jul</month>
<day>27</day>
<size units="leaf">4 leaves</size>
<comment>Located at: Modern Manuscripts Collection,
History of Medicine Division, National Library of
Medicine, Bethesda, MD; MS F 179</comment>
<annotation><p>Nightingale responds to Townshend&rsquo;s
request on behalf of a Mrs. Montague for funds to
support old nurses</p></annotation>
</element-citation>
</ref>
...