Dyfyniad APA

(2002). Reducing risks, promoting healthy life. World Health Organization.

Dyfyniad Arddull Chicago

Reducing Risks, Promoting Healthy Life. Geneva: World Health Organization, 2002.

Dyfyniad MLA

Reducing Risks, Promoting Healthy Life. World Health Organization, 2002.

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