ZENTRALAFRIKA: MUSIKGESCHICHTE IN BILDERN, by Jos Gansemans and Barbara Schmidt-Wrenger, VEB Deutscher Verlag fur Musik, Leipzig, 1986, Band I, Musikethnologie, Lieferung 9, 210 pages, 238 pictures (partly in colour), map, musical transcriptions and other text illustrations, ISBN 3-370-00150-0. (1996). African Music : Journal of the International Library of African Music, 7(3), 132-129. https://doi.org/10.21504/amj.v7i3.1983