@book{2085_ureyu2003,
  address   = {Asunci'on},
  author    = {Ureyu, Daniel Aeguazu},
  publisher = {Ministerio de Educaci'on Viceministerio de Educaci'on Escolarizada y Alternativa},
  title     = {Gu'ia del alfabeto guarayo},
  year      = {2003}
}