May be you are just looking for something as simple as copy and paste the item link of your source document into each document of your text snippets.
Or you may want to take a look at this # Final version of Stack (v0.96): Create stack for each document for multiple cards/snippets with backlink, cited text or note, comment, and tagging & perhaps a synergy with the Bookend script . There are a few major and popular posts mentioned in the thread regarding the annotation and link workflow Make an Annotation with Links, Notes, Tags v2 and Annotation Pane (Annotation with Links, Notes, Tags v3) .
1 Like