How to Add Footnotes in LaTeX
The fix
To add a footnote in LaTeX, put \footnote{your note} immediately after the word to mark — LaTeX numbers and places it at the bottom of the page automatically. Footnotes inside tabular do not work directly; use \footnotemark in the cell with \footnotetext after the table, or the threeparttable package.
Example
This claim needs a source\footnote{Smith, 2020.}.
% Footnote inside a table:
\usepackage{threeparttable}
\begin{threeparttable}
\begin{tabular}{l} Value\tnote{1} \end{tabular}
\begin{tablenotes}\item[1] Note text.\end{tablenotes}
\end{threeparttable}Frequently asked questions
Why does \footnote not work inside a table?
The tabular environment swallows footnotes. Use \footnotemark inside the cell and \footnotetext after the table, or the threeparttable package which is designed for table notes.
How do I change footnotes to symbols?
Use \renewcommand{\thefootnote}{\fnsymbol{footnote}} to switch to symbols. Reset numbering with \setcounter{footnote}{0}.
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