Dyfyniad APA

Ageing, health, and productivity. Oxford University Press.

Dyfyniad Arddull Chicago

Ageing, Health, and Productivity. Oxford University Press.

Dyfyniad MLA

Ageing, Health, and Productivity. Oxford University Press.

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