Author n.d.

Author, No. n.d. Dia: Notes on Wordlists: West Sepik - Yuwil etc. Ukarumpa: SILPNG Language Archives.

@misc{1919,
  author = {Author, No},
  title  = {Dia: Notes on Wordlists: West Sepik - Yuwil etc. Ukarumpa: SILPNG Language Archives.},
  year   = {n.d.}
}