I just asked Bing (via Skype) tio cite the best posts on Wemasterworld... One of the citations was:
[pubcon.com...]

So.. apart from it being a PDF link, the main thing is that it does not have any idetifiers. As it would have come from Shype, not a website, I doubt there is any referral information either,

So... short answer... I cannot see a way, unless you added a parameter..on the fly... whenever an LLMs crawler crawled the site in the forst place, thus populating a hard coded identifier in the AI data itself.... which I reckon has as much chance of being useful as a bat without a ball. Can anyone else see anything?