Nougayrol, Pierre. 1999. Les parlers gula: Centrafrique, Soudan, Tchad. Grammaire et lexique. Paris: Centre National de la Recherche Scientifique (CNRS).
@book{Nougayrol-1999,
address = {Paris},
author = {Nougayrol, Pierre},
publisher = {Centre National de la Recherche Scientifique (CNRS)},
title = {Les parlers gula: Centrafrique, Soudan, Tchad. Grammaire et lexique},
year = {1999},
iso_code = {glu},
olac_field = {general_linguistics; typology; semantics; morphology; syntax},
wals_code = {gul}
}