Lewis, H. (1951). Morals and revelation: By H.D. Lewis. Allen & Unwin.
Lua i Stíl Chicago (17ú heag.)Lewis, H.D. Morals and Revelation: By H.D. Lewis. London#: Allen & Unwin, 1951.
Lua MLA (8ú heag.)Lewis, H.D. Morals and Revelation: By H.D. Lewis. Allen & Unwin, 1951.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.