Godfrey, Thomas James. 1981. Grammatical Categories for Spatial Reference in the Western Mam Dialect of Tacaná. (Doctoral dissertation, University of Texas at Austin).
@phdthesis{mam_godfrey1981,
author = {Godfrey, Thomas James},
school = {University of Texas at Austin},
title = {Grammatical Categories for Spatial Reference in the Western Mam Dialect of Tacaná},
year = {1981}
}