> For the complete documentation index, see [llms.txt](https://lead-ncl.gitbook.io/language-and-linguistics-style-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://lead-ncl.gitbook.io/language-and-linguistics-style-guide/lists-of-references/other-sources.md).

# Other sources

On occasion, you may wish to references sources other than the ones discussed above (e.g. films, podcasts etc.). If you find yourself in this situation, please consult the following website: <http://www.library.dmu.ac.uk/Images/Selfstudy/Harvard.pdf>. It contains a comprehensive summary of the Harvard system of referencing and will illustrate how to reference materials not discussed above.