van Driem, George. 1993. The Proto-Tibeto-Burman verbal agreement system. Bulletin of the School of Oriental and African Studies 56. 292-334.
@article{jacquesestimative-driem93agreement, author = {van Driem, George}, journal = {Bulletin of the School of Oriental and African Studies}, number = {2}, pages = {292-334}, title = {The Proto-Tibeto-Burman verbal agreement system}, volume = {56}, year = {1993} }