@book{Ittmann-1978,
  address    = {Douala},
  author     = {Ittmann, Johannes},
  note       = {Translated by L.A. Boumard.},
  publisher  = {Le Collège Libermann},
  title      = {Grammaire du duala},
  year       = {1978},
  iso_code   = {dua},
  olac_field = {typology; syntax; general_linguistics},
  wals_code  = {dua}
}