@book{Lekens-1923,
  address    = {Bruges},
  author     = {Lekens, B.},
  publisher  = {s. n.},
  title      = {Spraachkunst der Ngbandi-taal},
  year       = {1923},
  iso_code   = {ngb; nbw},
  olac_field = {general_linguistics; syntax; typology},
  wals_code  = {ndi}
}