Whats the difference between PDF and HTML formats?
Well, PDF is an actual scanned copy of the article that includes all the margins, charts, graphics, and page numbers found in the actual print copy of the journal. HTML is just the plain, typed text of the article. HTML usually does not include page numbers or charts, pictures, etc. For purposes of citation and writing your paper, I would recommend using PDF whenever possible. Since PDF has the page numbers, it will be easier to work with your citations in your paper.