Branks, Thomas and Branks, Judith. 1973. Sistemas Fonol'ogicos de Idiomas Colombianos. (2.) Ministerio de Gobierno. 39–56pp.
@book{1855_branks1973,
author = {Branks, Thomas and Branks, Judith},
booktitle = {Sistemas Fonol'ogicos de Idiomas Colombianos},
pages = {39–56},
publisher = {Ministerio de Gobierno},
title = {Fonolog'ia del guambiano},
volume = {2},
year = {1973}
}