Use APA for references in source:

[MrBrezina]

See https://apastyle.apa.org/style-grammar-guidelines/references/examples

Any other recommendations welcome. People should use Markdown for italics (asterisks).

Will need to update the README as well.

[MrBrezina]

I would keep the common sources such as Wikipedia, Unicode as simple as possible to keep the size of the database from getting bloated.

[kontur]

On that note, it would be nice to know the exact page(s) and maybe even #sections of wikipedia referenced. Some languages/scripts have several relevant pages etc. For a changing medium like wikipedia the date when referenced would be helpful; not sure if that is part of the APA but I would think so :)