1Dio Chrysostom, “The Forty-ninth Discourse: Declining Office as Archon”, 7 -8, in Dio Chrysostom, Discourse, Volume Ⅳ, Harvard University Press, 1956, p. 301
2Diogenes Laertius, Lives of Eminent Philosopher, Book Ⅰ, 1, Harvard University Press, 1962, p. 3
3Stuart Piggott, The Druids, London, Thames and Hudson, 1968, p. 15.
4Daithi O hogain, The Sacred Isle: Belief and Religion in Pre-Christian Ireland, Ireland, Collins Press, 2003, p. 71
5Liddell and Scott, A Greek-English Lexicon, Oxford University Press, 1996, p. 451
6Strabo, Geography, Volume Ⅱ, Book Ⅳ, 4, 4, Harvard University Press, 1960, p. 245.
7[古罗马]恺撒著,任炳湘译.《高卢战记》,商务印书馆,2002年,第138页.
8Paul R. Lonigan, The Druids: Priests of the Ancient Celts, Greenwood Press, 1996, p. 86.
9Paul R. Lonigan, The Druids: Priests of the Ancient Celts, pp. 89 - 118
10Diodorus Siculus, The Library of History, Volume Ⅲ, Book V, 31, Harvard University Press, 1962, p. 179.