Herm, G. (1976). The celts: The people who came out of the darkness. Ms. Rowan.
Lua i Stíl Chicago (17ú heag.)Herm, Gerhard. The Celts: The People Who Came Out of the Darkness. New York: Ms. Rowan, 1976.
Lua MLA (9ú heag.)Herm, Gerhard. The Celts: The People Who Came Out of the Darkness. Ms. Rowan, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.