Access Date for Cited Work


The date on which the cited work was examined


Some online resources are changing so quickly that a citation (<citation> or <nlm-citation>) to the resource is not complete without the date on which the cited resource was examined, since a day before or a day later, the relevant material might be different.

For extensive examples of formatted <nlm-citation>s including use of <access-date>s in <nlm-citation>s, see: Sample PubMed Central Citations. To see tagged versions of these examples, see: Sample PubMed Central Citations - XML Tagged.

Related Elements

The related element <time-stamp> is used to record a time stamp that was found on the resource when it was examined, not the date when the researcher examined the cited resource. The time stamp is applied to the resource by its creators, usually as a version indicator.

Model Information

Content Model

<!ELEMENT  access-date  (#PCDATA %access-date-elements;)*            >


Text, numbers, or special characters, zero or more

This element may be contained in:

<citation> Citation; <nlm-citation> NLM Citation Model; <product> Product Information; <related-article> Related Article Information

Tagged Example

<nlm-citation citation-type="book">
<person-group person-group-type="author">
<given-names>Ruth A</given-names>
<source>A review of the medical benefits and contraindications 
to breastfeeding in the United States [Internet]</source>
<access-date>cited 2000 Apr 24</access-date>
<publisher-loc>Arlington (VA)</publisher-loc>
<publisher-name>National Center for Education in Maternal 
and Child Health</publisher-name>
<comment>Available from: 
<ext-link ext-link-type="url" xlink:href="www.ncemch.org/pubs/PDFs/