Dyfyniad APA

Drug and Alcohol Dependence. Cambridge University Press.

Dyfyniad Arddull Chicago

Drug and Alcohol Dependence. Cambridge University Press.

Dyfyniad MLA

Drug and Alcohol Dependence. Cambridge University Press.

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