Where did that come from?
An answer you can't trace is an answer you can't defend. Build sourcing into the prompt.
Quote, then claim
For Your Own Docs
“Support each point with a short quote from the document.”
Quotes are easy to check with a quick search.
Point to the place
Page And Section
“Give the section or page number for every fact.”
Turns checking into a lookup.
Links for the web
And Open Them
“Link every source you used.”
A real link can still say something different. Click it.
No source, no claim. Then open the source.