?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Johnstone&rft.aufirst=Richard&rft.au=Johnstone%2C+Richard&rft.issue=1&rft.date=2014&rft.volume=27&rft.atitle=Engaging+expert+contractors%3A+The+work+health+and+safety+obligations+of+the+business+or+undertaking&rft.issn=1030-7222&rft.title=Australian+Journal+of+Labour+Law&rft.genre=article