Healey, Alan. 1964. The Ok Language Family in New Guinea. ([Sometimes cited as A Survey of the Ok Family of Languages presumably because part of the thesis II-IV, which contains all linguistic data, carries this title.], Australian National University; 271pp.)
@phdthesis{ldHealeyOk, author = {Healey, Alan}, note = {[Sometimes cited as A Survey of the Ok Family of Languages presumably because part of the thesis II-IV, which contains all linguistic data, carries this title.]}, pages = {271}, school = {Australian National University}, title = {The Ok Language Family in New Guinea}, year = {1964} }