Michael et al. 2012

Michael, Lev and Stark, Tammy and Chang, Will. 2012. South American Phonological Inventory Database. University of California.

http://linguistics.berkeley.edu/ saphon/en/

@misc{saphon,
  author    = {Michael, Lev and Stark, Tammy and Chang, Will},
  publisher = {University of California},
  title     = {South American Phonological Inventory Database},
  url       = {http://linguistics.berkeley.edu/ saphon/en/},
  year      = {2012}
}