Tracey, Andrew. HUMBI EN HANDA - ANGOLA. Recording and commentary by Gerhard Kubik. One 12” 33⅓ rpm disc, 1973. Belgisches Radio en Televisie 6803 044 (No. 9 of a series issued by the Koninklijk Museum voor Midden-Afrika, Tervuren). Notes in German and Flemish, with summaries in French and English, 80 pp., music, photos. 1975. International Library of African Music. Africa Multiple Interactive Research Atlas (AMIRA). https://doi.org/10.21504/amj.v5i4.1626.