Armstrong, Karen ([1993] 1999): . Vintage. S. 528. ISBN 0-09-927367-5. Dalley, Stephanie M.: . New York, NY: Oxford University Press, 1989. Hooke, S. H.: . 1963. 1975 ed. Baltimore, MA: Penguin Books Ltd., 1975. Leach, Marjorie: . Santa Barbara: ABC-CLIO, 1992. 1992. Clark Memorial Library, Portsmouth.