Andy Mabbett wrote: >> What about: >> <a class= "tag isbn" href="http://www.example.com/wibble/71194301X"> >> which could be a URL on the same site as the citation, >> or on a trusted bibliographic website. Agreed, but is there the latter? -Mike Schinkel http://www.mikeschinkel.com/blogs/ http://www.welldesignedurls.org/