@book{dryerorder-hhgPerezChorti,
  address   = {Guatemala},
  author    = {Pérez Martínez, Vitalino},
  key       = {Perez Martinez 1994},
  pages     = {160},
  publisher = {Proyecto Linuistico Francisco Marroquin},
  title     = {Gramática del idioma Ch'orti'},
  year      = {1994}
}