@misc{1108,
  author = {Conrad, Robert J. and Lewis, Ronald K.},
  title  = {Some language and sociolinguistic relationships in the Upper Sepik region of Papua New Guinea. In: Geoffrey P. Smith (ed.), Papers in New Guinea Linguistics 26, 243-273. Canberra: Research School of Pacific and Asian Studies, Australian National University.},
  year   = {1988}
}