Campbell, Lyle. 1985. The Pipil Language of El Salvador. (Mouton Grammar Library, 1.) Berlin: Mouton de Gruyter.
@book{sinnemakizeromarking-Campbell1985b, address = {Berlin}, author = {Campbell, Lyle}, publisher = {Mouton de Gruyter}, series = {Mouton Grammar Library}, title = {The Pipil Language of El Salvador}, volume = {1}, year = {1985} }