Reference: Frank et al. 1993

Frank, Paul S., Timothy Erickson & Catherine Erickson. 1993. Vocabulario jupda-español-português. Bogotá: Asociación Instituto Lingüístico de Verano. v+146pp.

@book{frank1993jupda,
  address   = {Bogotá},
  author    = {Frank, Paul S. and Erickson, Timothy and Erickson, Catherine},
  pages     = {v+146},
  publisher = {Asociación Instituto Lingüístico de Verano},
  title     = {Vocabulario jupda-español-português},
  year      = {1993}
}