Citation style: "S." instead of "pp." or "p." in visual editor?

I am trying to edit my citation style (Harvard ref format 1) so that it shows "s" instead of "p" or "pp" when inserting page number ("s" being short for the Swedish word for page, "sida"). I find how to change the formatting of the p/pp in the visual editor as well as the code section, but I can't find anywhere to change the actual acronym. Help? /Daniel