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Tylor, E. B. Researches into the Early History of Mankind, p. 129 (3d ed., London, 1878); Primitive Culture, Index, s.v. (3d ed., London, 1891).
King, J. H. The Supernatural, bk. ii, chap. iii f. (London, 1892).
Davies, T. Witton. Magic, Divination, and Demonology (London, 1898).
Tiele, C. P. Elements of the Science of Religion, Index, s.v. (Edinburgh and London, 1899).
Jevons, F. B. Introduction to the History of Religion, Index, s.v. (London, 1896; 2d. ed., 1902).
Lano, A. Magic and Religion (London, 1901).
Hobhouse, L. T. Morals in Evolution, Index, s.v. (London and New York, 1906).
Haddon, A. C. Magic and Fetishism (London, 1906).
Westermarck, E. Origin and Development of the Moral Ideas, Index, s.v. (London, 1908).