I am sure this has been asked before but I couldn't find it. I have placed quotes throughout my book that have to do with death and loss. These are mostly poems or proverbs. I have several Shakespeare quotes as well as proverbs like, "There is no death, only a change of worlds", that sort of thing. Do I need to provide any kind of reference for these in my book and what is the format for doing that? Sorry, just very new at all of this. Thanks in advance!