Footnotes are a breeze, for example:
Most of the time, you should adhere to the APA citation style[^1].
Note that footnote references have to be *unique in the markdown file*. This means, that you can also reference footnotes from any slide, no matter where they are defined.
[^1]: For more details on the citation guidelines of the American Psychological Association check out their [website](https://www.library.cornell.edu/research/citation/apa).
# Named References
Instead of just numbers, you can also name your footnote references[^Wiles, 1995].
[^Wiles, 1995]: [Modular elliptic curves and Fermat's Last Theorem](http://math.stanford.edu/~lekheng/flt/wiles.pdf). Annals of Mathematics 141 (3): 443–551.