code: public ReferrerList getPhotostreamReferrers(Date date, String domain, int perPage, int page) throws FlickrException {
          return getReferrers(METHOD_GET_PHOTOSTREAM_REFERRERS, domain, null, null, date, perPage, page);
      }
docs: Get a list of referrers from a given domain to a user's photostream.
  
  @param date
  (Required) Stats will be returned for this date. A day according to Flickr Stats starts at midnight GMT for all users, and timestamps will
  automatically be rounded down to the start of the day.
  @param domain
  (Required) The domain to return referrers for. This should be a hostname (eg: "flickr.com") with no protocol or pathname.
  @param perPage
  (Optional) Number of domains to return per page. If this argument is omitted, it defaults to 25. The maximum allowed value is 100.
  @param page
  (Optional) The page of results to return. If this argument is omitted, it defaults to 1.
  @see "http://www.flickr.com/services/api/flickr.stats.getPhotostreamReferrers.html"