At the risk of being told I'm pedantic, for the sake of the rest of us, I'd like to make a semi-public suggestion that these links be read and adhered to...
http://owl.english.purdue.edu/handou...r/g_quote.html
http://grammar.ccc.commnet.edu/GRAMM.../quotation.htm
http://www.grammarbook.com/punctuation/quotes.asp