Citing Sources within Sources

[Chancetobe]

Does anyone know the proper way to go about this. For instance, I'm reading a book, and it quotes someone. And I want to use that quote. Do I quote the book I'm reading, or the original source?

[Neo Cassady]

Original source. Otherwise you'd have a chaotic mess of quotes and citations that would probably just end up being confusing.

[perceptrons]

Original source is always best, but if that cannot be located for some reason, it is possible to do a "Quoted in/by" sort of thing. It also depends on what form you are using. APA, MLA, Chicago, etc., all have websites that will answer this question for you.