Stapleton, Walter H. 1903. Comparative handbook of Congo languages: being a comparative grammar of the eight principal languages spoken along the banks of the Congo river from the west coast of Africa to Stanley Falls, and of Swahili, the 'lingua franca' of the country stretching thence to the east coast. Yakusu (Congo Free State) & London: Baptist Missionary Soc.; Kegan Paul. xxiii+326pp.
@book{hvsStapletonCongo,
author = {Stapleton, Walter H.},
pages = {xxiii+326},
publisher = {Yakusu (Congo Free State) & London: Baptist Missionary Soc.; Kegan Paul},
title = {Comparative handbook of Congo languages: being a comparative grammar of the eight principal languages spoken along the banks of the Congo river from the west coast of Africa to Stanley Falls, and of Swahili, the 'lingua franca' of the country stretching thence to the east coast},
year = {1903}
}