I have wrote a paper almost a year ago which it was accepted by a peer review in a conference. However, I never got to present it there due to excessive fees of the event. I want to cite this paper now, so my question is, can I treat this paper as unpublished work or is there a formal way to say accepted in the conference, or any other appropriate way? If it makes any difference i am using Harvard citation format. Side note, is it ok to upload it to my academia webpage and make a citation to there?