@misc{Haviland-2001,
  author       = {Haviland, John},
  howpublished = {online},
  title        = {Tzotzil grammar},
  url          = {http://www.zapata.org/Tzotzil/},
  year         = {2001},
  iso_code     = {tzc},
  olac_field   = {syntax; typology; general_linguistics},
  wals_code    = {tzo}
}