Dyfyniad APA

(1949). Proceedings. American Cancer Society and the National cancer Institute of the United States Public Health Service, Federal Security Agency.

Dyfyniad Arddull Chicago

Proceedings. New York: American Cancer Society and the National cancer Institute of the United States Public Health Service, Federal Security Agency, 1949.

Dyfyniad MLA

Proceedings. American Cancer Society and the National cancer Institute of the United States Public Health Service, Federal Security Agency, 1949.

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