Williams, Ann F. and Longacre, Robert E. 1966. Popoloca clause types. Acta Linguistica Hafniensia 10. 161-186.
@article{Williams-and-Longacre-1966,
author = {Williams, Ann F. and Longacre, Robert E.},
journal = {Acta Linguistica Hafniensia},
pages = {161-186},
title = {Popoloca clause types},
volume = {10},
year = {1966}
}