Forsberg, Vivian M. 1992. A pedagogical grammar of Tboli. Studies in Philippine Linguistics 9. 1-110.
@article{sinnemakizeromarking-Forsberg1992, author = {Forsberg, Vivian M.}, journal = {Studies in Philippine Linguistics}, number = {1}, pages = {1-110}, title = {A pedagogical grammar of Tboli}, volume = {9}, year = {1992} }