"THE STUDY OF PRIMITIVE MUSICAL INSTRUMENTS. Brief notes on some existing approaches and systems of classification”, by David Rycroft, Review of Ethnology, Volume 1, 1969, No. 14, pp. 1-8, and No. 15, pp. 1-5, Institut fur Volkerkunde, Vienna University. Afr. music [Internet]. 1970 Aug. 5 [cited 2024 Nov. 22];4(4):126. Available from: https://journal.ru.ac.za/index.php/africanmusic/article/view/1692