Boelaert, E. 1940. De Nkundo-Maatschappij. Kongo-Overzee 6. 148-161.
@article{boelaert1940,
author = {Boelaert, E.},
journal = {Kongo-Overzee},
key = {Boelaert (1940)},
pages = {148-161},
title = {De Nkundo-Maatschappij},
volume = {6},
year = {1940}
}