?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Johnson&rft.au=Johnson%2C+SD&rft.aufirst=SD&rft.volume=51&rft.title=Journal+of+Research+in+Crime+and+Delinquency&rft.pages=509-525&rft.date=July+2014&rft.issue=4&rft.atitle=Strengthening+Theoretical+Testing+in+Criminology+Using+Agent-based+Modeling&rft.genre=article