@book{robbins1968,
  address   = {México},
  author    = {Robbins, Frank E.},
  publisher = {Museo Nacional de Antropolog'i?a},
  series    = {Papeles de la Chinantla},
  title     = {Quiotepec Chinantec Grammar},
  volume    = {4},
  year      = {1968}
}