@article{wilbert1963,
  address = {Caracas: Fundación La Salle de Ciencias Naturales},
  author  = {Wilbert, J.},
  key     = {Wilbert (1963)},
  title   = {Indios de la región Orinoco-Ventuari},
  volume  = {8},
  year    = {1963}
}