Does there exist passive voice in Lakhota and Cheyenne? Avelino Corral Esteban | Show more Avelino Corral Esteban Spain Universidad Autónoma de Madrid Submitted: 2012-07-08 | Accepted: 2012-07-09 | Published: 2012-07-12 DOI: https://doi.org/10.4995/rlyla.2012.1126