Tharp, Doug. 1996. Sulka Grammar Essentials. In Clifton, John M. (ed.), Two Non-Austronesian Grammars from the Islands, 77-179. Ukarumpa: Summer Institute of Linguistics.
@incollection{sinnemakizeromarking-Tharp1996, address = {Ukarumpa}, author = {Tharp, Doug}, booktitle = {Two Non-Austronesian Grammars from the Islands}, editor = {Clifton, John M.}, pages = {77-179}, publisher = {Summer Institute of Linguistics}, title = {Sulka Grammar Essentials}, url = {https://www.sil.org/resources/archives/23670}, year = {1996} }