Verified answer

Just regular quotation marks but you have to do in-text citation. Like, Mr. Smith stated, "There was no vanilla pudding in the refrigerator (Smith, 147).

The best website to show you how to do your citations is http://owl.english.purdue.edu/owl/resource/560/01/

All you do is leave it in its original form. That's how the reader would know that thoses words are not yours and that's how you cite them. Simple! For example "It's raining". You just write it the same way. Hope that helps :)