?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Saito&rft.au=Saito%2C+K&rft.aufirst=K&rft.atitle=How+Does+Longitudinal+Interaction+Promote+Second+Language+Speech+Learning%3F+Roles+of+Learner+Experience+and+Proficiency+Levels&rft.title=Second+Language+Research&rft.date=14+November+2019&rft.issn=0267-6583&rft.genre=article