Castaneda, C. (1979). The second ring of power. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Castaneda, Carlos. The Second Ring of Power. Harmondsworth: Penguin Books, 1979.
Lua MLA (8ú heag.)Castaneda, Carlos. The Second Ring of Power. Penguin Books, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.