Lawrence, Marshall. 1993. Oksapmin Dictionary. Ukarumpa, Papua New Guinea: Summer Institute of Linguistics.
@book{Lawrence-1993, address = {Ukarumpa, Papua New Guinea}, author = {Lawrence, Marshall}, publisher = {Summer Institute of Linguistics.}, title = {Oksapmin Dictionary}, year = {1993}, iso_code = {opm}, olac_field = {typology; general_linguistics; phonology; phonetics}, wals_code = {oks} }