Maddieson, Ian. 1987. The Margi Vowel System and Labiocoronals. Studies in African Linguistics 18. 327–355.
@article{maddieson1987,
author = {Maddieson, Ian},
journal = {Studies in African Linguistics},
number = {3},
pages = {327–355},
title = {The Margi Vowel System and Labiocoronals},
volume = {18},
year = {1987}
}