Duane, O. B. (1996). Celtic art. Brockhampton Press.
Lua i Stíl Chicago (17ú heag.)Duane, O. B. Celtic Art. London, England: Brockhampton Press, 1996.
Lua MLA (9ú heag.)Duane, O. B. Celtic Art. Brockhampton Press, 1996.
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