Hart, Helen Long. 1957. Hierarchical structuring of Amuzgo grammar. International Journal of American Linguistics 23. 141-164.
@article{sinnemakizeromarking-Hart1957,
author = {Hart, Helen Long},
journal = {International Journal of American Linguistics},
number = {3},
pages = {141-164},
title = {Hierarchical structuring of Amuzgo grammar},
volume = {23},
year = {1957}
}