Butler, C. (1930). Religions of authority and the religion of the spirit: With other essays apologetical and critical. Sheed & Ward.
Lua i Stíl Chicago (17ú heag.)Butler, Cuthbert. Religions of Authority and the Religion of the Spirit: With Other Essays Apologetical and Critical. London: Sheed & Ward, 1930.
Lua MLA (8ú heag.)Butler, Cuthbert. Religions of Authority and the Religion of the Spirit: With Other Essays Apologetical and Critical. Sheed & Ward, 1930.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.