Dyfyniad APA

American Ethical Union. (1964). Ethical culture today. American Ethical Union.

Dyfyniad Arddull Chicago

American Ethical Union. Ethical Culture Today. [New York]: American Ethical Union, 1964.

Dyfyniad MLA

American Ethical Union. Ethical Culture Today. American Ethical Union, 1964.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.