Patman, Keith. 1989. Regles d'orthographe pour la language Nugunu. SIL Cameroon. (unpublished).
@unpublished{1629_patman_yas,
author = {Patman, Keith},
publisher = {SIL Cameroon},
title = {Regles d'orthographe pour la language Nugunu},
year = {1989}
}