This section contains samples of various types of citations tagged according to this
Publishing Tag Set. Tagging citations is an editorial decision and an art, so these are
not the only way the cited works could have been tagged. For many publishers, they will
not even be best practice, but they show one way and may help guide tagging use. Each
sample that follows can be assumed to be inside a
<ref>, which is inside a
<ref-list>. The text will be shown twice, the first tagged with the
element-style
<element-citation> element
and the second with the mixed-style
<mixed-citation> element.