How do I find the sources from ChatGPT?

Not all sources provided by ChatGPT are correct. ChatGPT is not a search engine, but a large language model constructed to generate text made to look like it was written by a human. The sources it provides are made to look like real sources, but you can't be sure that they're real or accurate. 

So, if you cannot find a source provided by ChatGPT, it's probably because the article or book doesn't exist.