American Ethical Union. (1964). Ethical culture today. American Ethical Union.
Lua i Stíl Chicago (17ú heag.)American Ethical Union. Ethical Culture Today. [New York]: American Ethical Union, 1964.
Lua MLA (8ú heag.)American Ethical Union. Ethical Culture Today. American Ethical Union, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.