National Research Institute of Papua New Guinea (2007). "East Sepik Province"(PDF). National Research Institute of Papua New Guinea. Archived from the original(PDF) on 2012-10-30. Retrieved 2012-01-14.
National Research Institute of Papua New Guinea (2007). "East Sepik Province"(PDF). National Research Institute of Papua New Guinea. Archived from the original(PDF) on 2012-10-30. Retrieved 2012-01-14.