Whenever I quote Keynes on here, I get it from this website, unless its a passage that I know I've underlined, dog-eared, and highlighted to death in my own copy in which case it's easier to find there. Often I don't cite page numbers, etc. - but I should note the chapter. So you can always go there and do a word search.
Don't let the url scare you away - take a look at the main site and see what else they have. It really is a phenomenal resource.