hi there! how can i add the source of

You can do

That's where they're contained, there is also the CitationQueryEngine if you want the references to be in the LLM response: https://docs.llamaindex.ai/en/stable/examples/query_engine/citation_query_engine.html

yes, but i was thinking about the llm response containing the filepath and pages not that way

do u thinks there is any way?

The retrieved source nodes will have the information, you can phrase your prompt to ask for these details if you want them in the LLM response (if you don't want to just print them directly)