When citing a quote from a novel, what information needs to be in the parentheses? where does the period go?

It usually depends on what English teacher / class you have. I think you have to do (Last name, First Name, Book Name, City (if given), and Year) or maybe less depending on what your teacher ideally wants. Your teacher  should clarify this and if they complain about this format, blame them for not teaching their preference to you. The period probably would be after the parenthesis, at the very end. Hope this helps

You didnt give definitions or words!

He says that we must never forget what happened, and that forgetting such a terrible crime against humanity would be like being accomplices in the crime itself. we must forever keep it in our memories. he was referring to the holocaust.