[#third]_ is a reference to the third auto-numbered footnote.

.. [#first] First auto-numbered footnote.
.. [#second] Second auto-numbered footnote.
.. [#third] Third auto-numbered footnote.

[#second]_ is a reference to the second auto-numbered footnote.
[#first]_ is a reference to the first auto-numbered footnote.
[#third]_ is another reference to the third auto-numbered footnote.

Here are some internal cross-references to the targets generated by
the footnotes: first_, second_, third_.