正如人们所预料的那样，对于这样一个深受欢迎的主题，相关的书籍非常之多。在提出延伸阅读的建议时，我必然要精挑细选，限定在每个大标题下不超过四本书。我选择的都是用英文出版的作品，每一本都有长长的参考书目，如果一本一本地去阅读，一定会让你终身受益。我略去了所有那些依赖第三手资料来源而自己又没什么可补充的著作，无论它们有多么吸引人。毋庸置疑，那些思想极端的著作概不收录。

欧洲史前背景

B. Cunliffe (ed.), The Oxford Illustrated History of Prehistoric Europe (Oxford: Oxford University Press, 1994). ——Facing the Ocean: The Atlantic and its Peoples (Oxford: Oxford University Press, 2001).

K. Kristiansen, Europe before History (Cambridge: Cambridge University Press, 1998).

关于凯尔特人的一般书籍

B. Cunliffe, The Ancient Celts (Oxford: Oxford University Press, 1997).

M. J. Green (ed.), The Celtic World (London: Routledge, 1995).

J. Haywood, The Historical Atlas of the Celtic World (London: Thames and Hudson, 2001).

S. Moscati (ed.), The Celts (Milan: Bompiani, 1991).

希腊人和罗马人眼中的凯尔特人

H. D. Rankin, Celts and the Classical World (London: Croom Helm, 1987).

凯尔特艺术

R. Megaw and V. Megaw, Celtic Art from its Beginnings to the Book of Kells (2nd edn., London: Thames and Hudson, 2001).

I. M. Stead, Celtic Art (London: British Museum, 1985).

凯尔特人的宗教

J. L. Brunaux, The Celtic Gauls: Gods, Rites and Sanctuaries (London: Seaby, 1988).

M. Green, The Gods of the Celts (Gloucester: Alan Sutton, 1968).

S. Piggott, The Druids (London: Thames and Hudson, 1968).

M.-L. Sjoestedt, Gods and Heroes of the Celts (Dublin: Four Courts Press, 1994).

岛屿方言文学

M. Dillon, Early Irish Literature (Chicago: University of Chicago Press, 1948).

H. J. Jackson, The Oldest Irish Tradition: A Window on the Iron Age (Cambridge: Cambridge University Press, 1964).

T. Kinsella (trans.), The Táin (Oxford: Oxford University Press, 1969).

J. T. Koch (ed.), The Celtic Heroic Age (Malden, MA: Celtic Studies Publications, 1994).

凯尔特语

P. Russell, An Introduction to the Celtic Languages (London: Longmans, 1995).

现代凯尔特人：神话？

M. Chapman, The Celts. The Construction of a Myth (New York: St Martin’s Press, 1992).

S. James, The Atlantic Celts: Ancient People or Modern Invention (London: British Museum Press, 1999).

文中提到的作品

S. Baring Gould, A Book of Brittany (London: Methuen & Co., 1901).

J. R. Collis,‘Los Celtas en Europa’, in M. AlmagroGorbea and G. Ruiz Zapatero (eds.), Los Celtas: Hispania y Europa (Madrid: Actas, 1993), 63–76.

——‘States without centres？ The Middle La Tène Period in Temperate Europe’, in B. Arnold and D. B. Gibson (eds.), Celtic Chiefdom, Celtic State: The Evolution of Complex Social Systems (Cambridge: Cambridge University Press, 1995), 75–80.

M.-A. Constantine, Breton Ballads (Aberystwyth: University of Wales Press, 1996).

J. H. Delargy, The Gaelic Story-Teller: With Some Notes on Gaelic FolkTales (Reprints in Irish Studies 6; London: Cumberlege, 1945).

D. E. Evans, ‘The Early Celts: The Evidence of Language’, in M. J. Green (ed.), The Celtic World (London: Routledge, 1995), 8–20. ——‘Linguistics and Celtic Ethnogenesis’, in R. Black, W. Gillies, and R. ó Maolalaigh (eds.), Celtic Connections, i. Language, Literature, History, Culture (East Linton: Tuckwell, 1999), 1–18.

D. Prigent, ‘The Lorient Interceltic Festival’, Carn, 115 (2001), 8.

P. Sims-Williams, ‘Celtomania and Celtoscepticism’, Cambrian Medieval Celtic Studies, 36 (1998), 1–35.

J. R. R. Tolkien, ‘On English and Welsh’, in H. Lewis (ed.), Angles and Britons: O’Donnell Lectures (Cardiff: University of Wales Press, 1963)