Purnell, Greg. 1987. Yis wordlist, Lumi sub-district, West Sepik Province. Ukarumpa: SILPNG Archives.
@misc{11752,
author = {Purnell, Greg},
title = {Yis wordlist, Lumi sub-district, West Sepik Province. Ukarumpa: SILPNG Archives.},
year = {1987}
}