Stevenson, Roland C. 1957. A Survey of the Phonetics and Grammatical Structure of the Nuba Mountain Languages, With Particular Reference to Otoro, Katcha and Nyimang. Afrika und "Ubersee 40, 41. 73–84, 93–115, 117–152, 171–196.
@article{stevenson1957,
address = {Hamburg},
author = {Stevenson, Roland C.},
journal = {Afrika und "Ubersee},
pages = {73–84, 93–115, 117–152, 171–196},
title = {A Survey of the Phonetics and Grammatical Structure of the Nuba Mountain Languages, With Particular Reference to Otoro, Katcha and Nyimang},
volume = {40, 41},
year = {1957}
}