@article{20224,
      author = {Grevisse, Maurice, and Grevisse, Maurice. and Robert,  Paul, and Goosse, André,},
      url = {http://tind.wipo.int/record/20224},
      title = {Le bon usage : grammaire française /},
      recid = {20224},
      pages = {xxxviii, 1768 pages ;},
}