Hopper, Paul and Thompson, Sandra A. 1980. Transitivity in Grammar and Discourse. Language 56. 251-299.
@article{Hopper-and-Thompson-1980,
author = {Hopper, Paul and Thompson, Sandra A.},
journal = {Language},
pages = {251-299},
title = {Transitivity in Grammar and Discourse},
volume = {56},
year = {1980}
}