↑ Ki-Zerbo, Joseph: "Methodology and African Prehistory", 1990, UNESCO International Scientific Committee for the Drafting of a General History of Africa; James Currey Publishers, ISBN0-85255-091-X, 9780852550915; see Ch. 7; "Oral tradition and its methodology" at pages 54-61; at page 54: "Oral tradition may be defined as being a testimony transmitted verbally from one generation to another. Its special characteristics are that it is verbal and the manner in which it is transmitted."
