?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=DeMars%2C+J.+Michael&rft.aufirst=J.+Michael&rft.aulast=DeMars&rft.date=1+May+2019&rft.title=If+You+Build+it%2C+Will+They+Come%3F%3A+Natural+Experiments+with+Springshare's+Proactive+Chat+Reference&rft.genre=proceeding