Dyfyniad APA

(1985). Drugs for the Elderly. World Haelth Organization.

Dyfyniad Arddull Chicago

Drugs for the Elderly. Copenhague: World Haelth Organization, 1985.

Dyfyniad MLA

Drugs for the Elderly. World Haelth Organization, 1985.

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