Dyfyniad APA

International Health Trends and Perspectives | Ryerson University. Cambridge University Press.

Dyfyniad Arddull Chicago

International Health Trends and Perspectives | Ryerson University. Cambridge University Press.

Dyfyniad MLA

International Health Trends and Perspectives | Ryerson University. Cambridge University Press.

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