E.R. Dodds, The Greeks and the Irrational, zit. in Hadas, op.cit., S.39

Robert Graves, On Poetry (New York, Doubleday, 1969), S.13

Geoffrey of Monmouth, op.cit., S. 65

Ebd., S.112

Porphyry, »The Life of Pythagoras«, in Moses Hadas, Hrsg., Hernes and Gods (London, Routledge, 1965), S.105-128

»Druidism«, Encyclopaedia Britannica, 11. Aufl.

Robert Graves, The Greek Myths, Bd.I (New York, Braziller, 1957), S. 113

W.K.C. Guthrie, Orpheus and Greek Religion, Überarb. Aufl. (New York, Norton, 1966), S. 224

Philostratus, Apollonius of Tyana, übers, von J.S. Phillimore, Bd.II, Buch 8 (London, Oxford University Press, 1912), S. 233

Gibbon, op.cit., S.312