Dyfyniad APA

Coad, P. Advertisement, "Scientific Lectures", [n.d].

Dyfyniad Arddull Chicago

Coad, Patrick. Advertisement, "Scientific Lectures", [n.d].

Dyfyniad MLA

Coad, Patrick. Advertisement, "Scientific Lectures", [n.d].

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