?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=De+Page%2C+H.&rft.aulast=De+Page&rft.aufirst=H.&rft.date=1943&rft.btitle=Trait%C3%A9+%C3%A9l%C3%A9mentaire+de+droit+civil+belge.+Principes%2C+doctrine%2C+jurisprudence.+IV.+Les+principaux+contrats+usuels&rft.tpages=983&rft.genre=book