SIRS Knowledge Source [new translator]

New translator for SIRS Knowledge Source, a ProQuest K-12 database
(Note: this only covers Knowledge Source, not SIRS Discoverer or SIRS Decades)
The latter. The format doesn't matter.
We wouldn't want a URL, say, for a book in a library catalog or for an article in a database (like PubMed) that just catalogs but doesn't host article texts.