- Ebbutt, M.I. & John Mattrews (Editor) (1995). Hero Myths & Legends of Britain & Ireland. Blandford Press. ISBN 0-7137-2532-X
- This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Horn (hero)". Encyclopædia Britannica 13 (11th ed.). Cambridge University Press. pp. 696–697.
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