You do not need to use paragraphs according to the OWL at Purdue and Bedford St. Martin. According to Bedford St. Martin:
4. Page number unknown Do not include the page number if a work lacks page numbers, as is the case with many Web sources. Even if a printout from a Web site shows page numbers, treat the source as unpaginated in the in-text citation because not all printouts give the same page numbers. (When the pages of a Web source are stable, as in PDF files, supply a page number in your in-text citation.)
As a 2005 study by
Salary.com and America Online indicates, the Internet ranked as the top choice among employees for ways of wasting time on the job; it beat talking with co-workers—the second most popular method—by a margin of nearly two to one (Frauenheim).
If a source has numbered paragraphs or sections, use “par.” (or “pars.”) or “sec.” (or “secs.”) in the parentheses: (Smith, par. 4). Notice that a comma follows the author’s name in this case.