Welmers, William E. 1962. The Phonology of Kpelle. Journal of African Languages 1. 69–93.
@article{welmers1962,
author = {Welmers, William E.},
journal = {Journal of African Languages},
pages = {69–93},
title = {The Phonology of Kpelle},
volume = {1},
year = {1962}
}