Wikipedia is a wondrous resource.
But beware if you have a choice bit of data to share. There are plenty of rules and methodologies it employs and woe-betide those that don't know them.
I have tried to add a snippet on Lewis Carroll and each time the moderators jump on it with reasons that are summarised with one or two word jargon. If you aren't a regular contributor it IS a foreign language. The last failure was because I referenced a YouTube video which was most likely a copyright violation, and that at least was understandable, but it took a few goes to get that far!

I started one on shanty collector William Main Doerflinger in response to a Mudcat thread bemoaning the lack thereof. & that took about 3 goes to get the technicalities right (I am a techie) and 3 months to be approved. There are still internal Wiki links to add, (technicalities forced me to leave them out at the time).

FWIW
Basically, references are external links (Wiki links are not allowed as references, called self-referencial links!). Internal links are inline blickies to Wiki pages.
And those familiar with HTML - it doesn't translate directly. Learn again!
I inspect & copy.