Howell, P. P. 1951. Notes on the Ngork Dinka. Sudan Notes and Records 32. 240-293.
@article{howell1951,
author = {Howell, P. P.},
journal = {Sudan Notes and Records},
key = {Howell (1951)},
pages = {240-293},
title = {Notes on the Ngork Dinka},
volume = {32},
year = {1951}
}