Campbell, Lyle. 1985. The Pipil Language of El Salvador. (Mouton Grammar Library, 1.) Berlin: Mouton de Gruyter. xiv+957pp.
@book{gCampbellPipil,
author = {Campbell, Lyle},
pages = {xiv+957},
publisher = {Berlin: Mouton de Gruyter},
series = {Mouton Grammar Library},
title = {The Pipil Language of El Salvador},
volume = {1},
year = {1985}
}