Dyfyniad APA

BJGP Open | Royal College of General Practitioners. Cambridge University Press.

Dyfyniad Arddull Chicago

BJGP Open | Royal College of General Practitioners. Cambridge University Press.

Dyfyniad MLA

BJGP Open | Royal College of General Practitioners. Cambridge University Press.

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