How to reference Paragraph entity?

I know there’s already a question, but I think my case is different.
I have a node_type “Website”, and a paragraph type “AdZone”.
Each website can have multiple zones.

Now I’d link to link a node_type “Campaign” not to a node_type Website, but directly to website’s paragraph_type “AdZone.

There’s no need to edit the paragraph inside the Campaign, because it’s only a reference.

I’ve tried in many ways, but can’t find a way to do it.

Thanks

(Drupal 9.1.8 – paragraphs 8.x-1.12)