Laycock n.d.

Laycock, Donald C. n.d. Notebook D15: Selected Research Papers of Don Laycock on Languages in Papua New Guinea. Don Laycock (compiler); Don Laycock (researcher). n.d. Pacific And Regional Archive for Digital Sources in Endangered Cultures (PARADISEC). paradisec.org.au/repository/DL2/items/026.

@misc{1054,
  author = {Laycock, Donald C.},
  title  = {Notebook D15: Selected Research Papers of Don Laycock on Languages in Papua New Guinea. Don Laycock (compiler); Don Laycock (researcher). n.d. Pacific And Regional Archive for Digital Sources in Endangered Cultures (PARADISEC). paradisec.org.au/repository/DL2/items/026.},
  year   = {n.d.}
}