Hawtrey, S. H. C. 1901. The Lengua Indians of the Paraguayan Chaco. Journal of the Royal Anthropological Institute 31. 280-299.
@article{hawtrey1901,
author = {Hawtrey, S. H. C.},
journal = {Journal of the Royal Anthropological Institute},
key = {Hawtrey (1901)},
pages = {280-299},
title = {The Lengua Indians of the Paraguayan Chaco},
volume = {31},
year = {1901}
}