(2011). Epidemiology and psychiatric sciences. Cambridge: Cambridge University Press.
Dyfyniad Arddull ChicagoEpidemiology and Psychiatric Sciences. Cambridge: Cambridge University Press, 2011.
Dyfyniad MLAEpidemiology and Psychiatric Sciences. Cambridge: Cambridge University Press, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.