@article{19991,
      note = {"Also published in a version for the professional market  as World intellectual property guidebook. United  States"--Verso of t.p.},
      author = {Chisum, Donald S., and Jacobs, Michael A., and Chisum,  Donald S.},
      url = {http://tind.wipo.int/record/19991},
      title = {Understanding intellectual property law /},
      recid = {19991},
      pages = {1 volume (various paging) ;},
}