1. Lawson, Joan. 1976.A History of Ballet and Its Makers, 1London: Dance Books.
2. Kirstein, Lincoln. 1970.Movement and Metaphor, 10New York: Praeger Publishers.
3. Clarke, Mary and Crisp, Clement. 1973.Ballet: A n Illustrated History, 23London: Adam and Charles Black.
4. Guest, Ivor. 1960.The Dancer's Heritage, 1London: The Dancing Times. 1977