Reference: Gerdel 1990

Gerdel, Florence L. 1990. Fonologia del Paez (Revisada 1989). SIL.

@book{gerdel1990paez,
  author    = {Gerdel, Florence L.},
  publisher = {SIL},
  title     = {Fonologia del Paez (Revisada 1989)},
  year      = {1990}
}