Tharp, Doug. 1996. Sulka Grammar Essentials. In Clifton, John M. (ed.) 42. 77-179. Ukarumpa, Papua New Guinea: Summer Institute of Linguistics. (also available online: http://www.sil.org/pacific/png/pubs/37102/Sulka_Grammar.pdf).
@inbook{Tharp-1996, address = {Ukarumpa, Papua New Guinea}, author = {Tharp, Doug}, booktitle = {Two Non-Austronesian Grammars from the Islands}, editor = {Clifton, John M.}, note = {also available online: http://www.sil.org/pacific/png/pubs/37102/Sulka_Grammar.pdf}, pages = {77-179}, publisher = {Summer Institute of Linguistics}, series = {Data Papers on Papua New Guinea Languages}, title = {Sulka Grammar Essentials}, volume = {42}, year = {1996}, iso_code = {sua}, olac_field = {general_linguistics; morphology; typology; phonetics; phonology; syntax; semantics}, wals_code = {sul} }