Dyfyniad APA

VAKKI Publications | VAKKI Communication Research Association. Cambridge University Press.

Dyfyniad Arddull Chicago

VAKKI Publications | VAKKI Communication Research Association. Cambridge University Press.

Dyfyniad MLA

VAKKI Publications | VAKKI Communication Research Association. Cambridge University Press.

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